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Document And Entity Information - shares	6 Months Ended
Document And Entity Information - shares	Jul. 29, 2017	Aug. 16, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jul. 29, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q2
Entity Registrant Name	ROSS STORES INC
Entity Central Index Key	0000745732
Current Fiscal Year End Date	--02-03
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding (in shares)		385,592,082

Condensed Consolidated Statements of Earnings shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 29, 2017 USD ($) stores $ / shares shares	Jul. 30, 2016 USD ($) stores $ / shares shares	Jul. 29, 2017 USD ($) stores $ / shares shares	Jul. 30, 2016 USD ($) stores $ / shares shares
Income Statement [Abstract]
Sales	$ 3,431,603	$ 3,180,917	$ 6,738,032	$ 6,269,912
Costs and Expenses
Cost of goods sold	2,420,942	2,251,845	4,750,908	4,428,050
Selling, general and administrative	498,276	469,511	973,095	906,435
Interest expense, net	2,341	4,213	5,510	8,577
Total costs and expenses	2,921,559	2,725,569	5,729,513	5,343,062
Earnings before taxes	510,044	455,348	1,008,519	926,850
Provision for taxes on earnings	193,505	173,442	370,962	354,310
Net earnings	$ 316,539	$ 281,906	$ 637,557	$ 572,540
Earnings per share
Basic (in dollars per share) \| $ / shares	$ 0.83	$ 0.72	$ 1.66	$ 1.45
Diluted (in dollars per share) \| $ / shares	$ 0.82	$ 0.71	$ 1.64	$ 1.44
Weighted average shares outstanding
Basic (in shares) \| shares	383,011	393,568	384,722	394,684
Diluted (in shares) \| shares	385,571	395,930	387,657	397,381
Dividends
Cash dividends declared per share (in dollars per share) \| $ / shares	$ 0.1600	$ 0.1350	$ 0.3200	$ 0.2700
Stores open at end of period (in number of stores) \| stores	1,589	1,501	1,589	1,501

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 29, 2017	Jul. 30, 2016	Jul. 29, 2017	Jul. 30, 2016
Statement of Comprehensive Income [Abstract]
Net earnings	$ 316,539	$ 281,906	$ 637,557	$ 572,540
Other comprehensive (loss) income:
Change in unrealized loss on investments, net of tax	(16)	(11)	(32)	(23)
Comprehensive income	$ 316,523	$ 281,895	$ 637,525	$ 572,517

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jul. 29, 2017	Jan. 28, 2017	Jul. 30, 2016
Current Assets
Cash and cash equivalents	$ 1,150,932	$ 1,111,599	$ 927,718
Short-term investments	0	0	1,213
Accounts receivable	103,359	75,154	97,139
Merchandise inventory	1,608,333	1,512,886	1,560,209
Prepaid expenses and other	141,793	113,410	127,401
Total current assets	3,004,417	2,813,049	2,713,680
Property and Equipment
Land and buildings	1,106,845	1,101,334	1,091,246
Fixtures and equipment	2,483,550	2,421,645	2,317,183
Leasehold improvements	1,029,457	998,508	953,700
Construction-in-progress	95,324	69,767	70,197
Property and equipment, gross	4,715,176	4,591,254	4,432,326
Less accumulated depreciation and amortization	2,388,063	2,263,206	2,121,845
Property and equipment, net	2,327,113	2,328,048	2,310,481
Long-term investments	1,259	1,288	1,325
Other long-term assets	181,690	166,966	168,748
Total assets	5,514,479	5,309,351	5,194,234
Current Liabilities
Accounts payable	1,172,847	1,021,735	1,125,836
Accrued expenses and other	411,083	398,126	397,150
Accrued payroll and benefits	245,031	316,492	228,195
Income taxes payable	0	16,153	0
Total current liabilities	1,828,961	1,752,506	1,751,181
Long-term debt	396,729	396,493	396,259
Other long-term liabilities	319,770	290,950	296,867
Deferred income taxes	129,135	121,385	135,597
Commitments and contingencies
Stockholders’ Equity
Common stock	3,859	3,919	3,971
Additional paid-in capital	1,253,724	1,215,715	1,179,373
Treasury stock	(316,002)	(272,846)	(268,847)
Accumulated other comprehensive income	59	91	159
Retained earnings	1,898,244	1,801,138	1,699,674
Total stockholders’ equity	2,839,884	2,748,017	2,614,330
Total liabilities and stockholders’ equity	$ 5,514,479	$ 5,309,351	$ 5,194,234

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jul. 29, 2017	Jul. 30, 2016
Cash Flows From Operating Activities
Net earnings	$ 637,557	$ 572,540
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	150,905	148,630
Stock-based compensation	42,719	36,206
Deferred income taxes	8,426	5,509
Change in assets and liabilities:
Merchandise inventory	(95,447)	(141,105)
Other current assets	(56,520)	(34,773)
Accounts payable	154,828	192,610
Other current liabilities	(59,104)	(13,108)
Other long-term, net	14,566	13,045
Net cash provided by operating activities	797,930	779,554
Cash Flows From Investing Activities
Additions to property and equipment	(169,316)	(147,426)
Increase in restricted cash and investments	(247)	(143)
Proceeds from investments	19	514
Net cash used in investing activities	(169,544)	(147,055)
Cash Flows From Financing Activities
Excess tax benefit from stock-based compensation	0	22,682
Issuance of common stock related to stock plans	9,157	9,862
Treasury stock purchased	(43,163)	(39,328)
Repurchase of common stock	(430,085)	(351,515)
Dividends paid	(124,962)	(108,084)
Net cash used in financing activities	(589,053)	(466,383)
Net increase in cash and cash equivalents	39,333	166,116
Cash and cash equivalents:
Beginning of period	1,111,599	761,602
End of period	1,150,932	927,718
Supplemental Cash Flow Disclosures
Interest paid	9,053	9,053
Income taxes paid	$ 379,154	$ 313,142

Summary of Significant Accounting Policies

6 Months Ended

Jul. 29, 2017

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Basis of presentation. The accompanying unaudited interim condensed consolidated financial statements have been prepared from the records of Ross Stores, Inc. and subsidiaries (the “Company”) without audit and, in the opinion of management, include all adjustments (consisting of only normal, recurring adjustments) necessary to present fairly the Company’s financial position as of July 29, 2017 and July 30, 2016, the results of operations and comprehensive income for the three and six month periods ended July 29, 2017 and July 30, 2016, and cash flows for the six month periods ended July 29, 2017 and July 30, 2016. The Condensed Consolidated Balance Sheet as of January 28, 2017, presented herein, has been derived from the Company’s audited consolidated financial statements for the fiscal year then ended.

Accounting policies followed by the Company are described in Note A to the audited consolidated financial statements for the fiscal year ended January 28, 2017. Certain information and disclosures normally included in the notes to annual consolidated financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been condensed or omitted for purposes of these interim condensed consolidated financial statements. The interim condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements, including notes thereto, contained in the Company’s Annual Report on Form 10-K for the year ended January 28, 2017.

The results of operations and comprehensive income for the three and six month periods ended July 29, 2017 and July 30, 2016 presented herein are not necessarily indicative of the results to be expected for the full fiscal year.

Restricted cash, cash equivalents, and investments. The Company has restricted cash, cash equivalents, and investments that serve as collateral for certain insurance obligations of the Company. These restricted funds are invested in bank deposits, money market mutual funds, U.S. Government and agency securities, and corporate securities and cannot be withdrawn from the Company’s account without the prior written consent of the secured parties. The following table summarizes total restricted cash, cash equivalents, and investments which were included in Prepaid expenses and other and Other long-term assets in the Condensed Consolidated Balance Sheets as of July 29, 2017, January 28, 2017, and July 30, 2016:



Restricted Assets ($000)	July 29, 2017		January 28, 2017		July 30, 2016
Prepaid expenses and other	$	13,683	$	13,642	$	15,798
Other long-term assets	54,732		54,567		56,010
Total	$	68,415	$	68,209	$	71,808

The classification between current and long-term is based on the timing of expected payments of the insurance obligations.

Property and equipment. As of July 29, 2017 and July 30, 2016, the Company had $6.5 million and $4.6 million, respectively, of property and equipment purchased but not yet paid. These purchases are included in Property and Equipment, Accounts payable, and Accrued expenses and other in the accompanying Condensed Consolidated Balance Sheets.

Cash Dividends. Dividends included in the Condensed Consolidated Statements of Cash Flows reflect cash dividends paid during the periods shown. Dividends per share reported on the Condensed Consolidated Statements of Earnings reflect cash dividends declared during the periods shown.

The Company's Board of Directors declared a cash dividend of $0.1600 per common share in February and May 2017 and $0.1350 per common share in March, May, August, and November 2016, respectively.

In August 2017, the Company's Board of Directors declared a cash dividend of $0.1600 per common share, payable on September 29, 2017.

Litigation, claims, and assessments. Like many retailers, the Company has been named in class action lawsuits, primarily in California, alleging violation of wage and hour/employment laws and consumer protection laws. Class action litigation remains pending as of July 29, 2017.

The Company is also party to various other legal and regulatory proceedings arising in the normal course of business. Actions filed against the Company may include commercial, product and product safety, consumer, intellectual property, and labor and employment-related claims, including lawsuits in which private plaintiffs or governmental agencies allege that the Company violated federal, state, and/or local laws. Actions against the Company are in various procedural stages. Many of these proceedings raise factual and legal issues and are subject to uncertainties.

In the opinion of management, the resolution of pending class action litigation and other currently pending legal and regulatory proceedings will not have a material adverse effect on the Company’s financial condition, results of operations, or cash flows.

Recently issued accounting standards. In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (ASU) 2014-09, Revenue from Contracts with Customers (Topic 606). The guidance provides a five-step analysis of transactions to determine when and how revenue is recognized. The core principle of the guidance is that a company should recognize revenue when the customer obtains control of promised goods or services in an amount that reflects the consideration which the company expects to receive in exchange for those goods or services. ASU 2014-09 is effective for the Company’s annual and interim reporting periods beginning in fiscal 2018. While the Company does not expect the adoption of this new guidance to be material to its consolidated financial statements, it does expect adoption to result in a change in the timing of recognizing revenue from breakage for stored value cards. Breakage will be estimated and recognized based upon the historical pattern of redemption, rather than when redemption is considered remote. Additionally, the Company expects to recognize allowances for estimated sales returns on a gross rather than net basis in the Consolidated Financial Statements. The Company expects to adopt the new standard under the modified retrospective method and will recognize a cumulative-effect adjustment in retained earnings as of the adoption date.

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842). The ASU requires balance sheet recognition for all leases with lease terms greater than one year including a lease liability, which is a lessee‘s obligation to make lease payments arising from a lease, measured on a discounted basis; and a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. ASU 2016-02 is effective for the Company's annual and interim reporting periods beginning in fiscal 2019. The Company is currently evaluating the effect adoption of this new guidance will have on its consolidated financial statements. Due to the substantial number of leases that it has, the Company believes this ASU will increase assets and liabilities by the same material amount on its consolidated balance sheet. The Company's current undiscounted minimum commitments under noncancelable operating leases is approximately $3.6 billion. The Company does not believe adoption of this ASU will have a significant impact to its consolidated statements of earnings, stockholders’ equity, and cash flows.

In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash. ASU 2016-18 requires restricted cash and restricted cash equivalents be included with cash and cash equivalents when reconciling the total beginning and ending amounts on the statement of cash flows. The standard also requires companies who report cash and restricted cash separately on the balance sheet to reconcile those amounts to the statement of cash flows. ASU 2016-18 is effective for the Company's annual and interim reporting periods beginning in fiscal 2018. The Company does not believe adoption of this ASU will have a significant impact to its consolidated financial statements.

Recently adopted accounting standards. In March 2016, the FASB issued ASU 2016-09, Compensation - Stock Compensation (Topic 718) - Improvements to Employee Share-Based Payment Accounting. ASU 2016-09 provides for changes to accounting for stock compensation including 1) excess tax benefits and tax deficiencies related to share based payment awards will be recognized as income tax benefit or expense in the reporting period in which they occur (previously such amounts were recognized in additional paid-in capital); 2) excess tax benefits will be classified as an operating activity in the statement of cash flows; and 3) the option to elect to estimate forfeitures or account for them when they occur. The impact of recording excess tax benefits in income taxes in the Condensed Consolidated Statement of Earnings may be material depending upon the Company's future stock price on vest date in relation to the fair value of awards on grant date and the Company's future grants of stock-based compensation.

The Company adopted ASU 2016-09 in the first quarter of fiscal 2017 and elected to apply this adoption prospectively, except for forfeitures which it adopted on a modified retrospective basis. Accordingly, prior periods have not been adjusted. As a result of adoption, for the six month period ended July 29, 2017, the Company recognized $15.1 million of excess tax benefits related to share-based payments as a reduction to its provision for income taxes. These items were historically recorded in additional paid-in capital. The Company also presented cash flows related to excess tax benefits as an operating activity in the Condensed Consolidated Statement of Cash Flows and elected to account for forfeitures as incurred beginning on January 29, 2017. The impact of this accounting policy election for forfeitures was a cumulative-effect adjustment to decrease retained earnings by $1.1 million, net of tax, as of January 29, 2017.

Fair Value Measurements

6 Months Ended

Jul. 29, 2017

Fair Value Disclosures [Abstract]

Fair Value Measurements

The carrying value of cash and cash equivalents, short- and long-term investments, restricted cash and cash equivalents, restricted investments, accounts receivable, other long-term assets, accounts payable, and other long-term liabilities approximates their estimated fair value.

Accounting standards pertaining to fair value measurements establish a three-tier fair value hierarchy which prioritizes the inputs used in measuring fair value. The inputs used to measure fair value include: Level 1, observable inputs such as quoted prices in active markets; Level 2, inputs other than quoted prices in active markets that are either directly or indirectly observable; and Level 3, unobservable inputs in which little or no market data exists. This fair value hierarchy requires the Company to develop its own assumptions and maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. Corporate, U.S. government and agency, and mortgage-backed securities are classified within Level 1 or Level 2 because these securities are valued using quoted market prices or alternative pricing sources and models utilizing market observable inputs.

There were no transfers between Level 1 and Level 2 categories during the three and six month periods ended July 29, 2017. The fair value of the Company’s financial instruments are as follows:



($000)	July 29, 2017		January 28, 2017		July 30, 2016
Cash and cash equivalents (Level 1)	$	1,150,932	$	1,111,599	$	927,718

Investments (Level 2)	$	1,259	$	1,288	$	2,538

Restricted cash and cash equivalents (Level 1)	$	64,838	$	64,581	$	68,101

Restricted investments
Level 1	$	—	$	—	$	3,707
Level 2	$	3,577	$	3,628	$	—

The underlying assets in the Company’s non-qualified deferred compensation program as of July 29, 2017, January 28, 2017, and July 30, 2016 (included in Other long-term assets and in Other long-term liabilities) primarily consist of participant-directed money market, stable value, stock, and bond funds. The fair value measurement for funds with quoted market prices in active markets (Level 1) and for funds without quoted market prices in active markets (Level 2) are as follows:



($000)	July 29, 2017		January 28, 2017		July 30, 2016
Level 1	$	97,282	$	84,933	$	83,651
Level 2	17,429		15,490		16,317
Total	$	114,711	$	100,423	$	99,968

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Stock-Based Compensation

6 Months Ended

Jul. 29, 2017

Share-based Compensation [Abstract]

Stock-Based Compensation

Stock-based compensation. For the three and six month periods ended July 29, 2017 and July 30, 2016, the Company recognized stock-based compensation expense as follows:



	Three Months Ended				Six Months Ended
($000)	July 29, 2017		July 30, 2016		July 29, 2017		July 30, 2016
Restricted stock	$	11,019	$	9,484	$	21,720	$	18,549
Performance awards	10,670		8,290		19,453		16,239
Employee stock purchase plan	792		716		1,546		1,418
Total	$	22,481	$	18,490	$	42,719	$	36,206

Total stock-based compensation expense recognized in the Company's Condensed Consolidated Statements of Earnings for the three and six month periods ended July 29, 2017 and July 30, 2016 is as follows:



	Three Months Ended				Six Months Ended
Statements of Earnings Classification ($000)	July 29, 2017		July 30, 2016		July 29, 2017		July 30, 2016
Cost of goods sold	$	10,316	$	8,278	$	20,111	$	16,108
Selling, general and administrative	12,165		10,212		22,608		20,098
Total	$	22,481	$	18,490	$	42,719	$	36,206

The tax benefits related to stock-based compensation expense for the three and six month periods ended July 29, 2017 were $7.8 million and $14.8 million, respectively. The tax benefits related to stock-based compensation expense for the three and six month periods ended July 30, 2016 were $6.4 million and $12.5 million, respectively.

Restricted stock awards. The Company grants shares of restricted stock to directors, officers, and key employees. The market value of shares of restricted stock at the date of grant is amortized to expense over the vesting period of generally three to five years.

During the three and six month periods ended July 29, 2017 and July 30, 2016, shares purchased by the Company for tax withholding totaled 69,934 and 646,747, and 45,063 and 682,060, respectively, and are considered treasury shares which are available for reissuance.

Performance share awards. The Company has a performance share award program for senior executives. A performance share award represents a right to receive shares of restricted stock on a specified settlement date based on the Company’s attainment of a profitability-based performance goal during the performance period, which is the Company’s fiscal year. If attained, the restricted stock then vests over a service period, generally two to three years from the date the performance award was granted.

As of July 29, 2017, shares related to unvested restricted stock and performance share awards totaled 5.2 million shares. A summary of restricted stock and performance share award activity for the six month period ended July 29, 2017 is presented below:



(000, except per share data)	Number of shares		Weighted average grant date fair value
Unvested at January 28, 2017	5,563		$	43.19
Awarded	1,185		65.16
Released	(1,494	)	37.99
Forfeited	(29	)	49.75
Unvested at July 29, 2017	5,225		$	50.39

The unamortized compensation expense at July 29, 2017 was $133.6 million which is expected to be recognized over a weighted-average remaining period of 2.2 years. The unamortized compensation expense at July 30, 2016 was $118.9 million, which was expected to be recognized over a weighted-average remaining period of 2.2 years.

Employee stock purchase plan. Under the Employee Stock Purchase Plan (“ESPP”), eligible employees participating in the quarterly offering period can choose to have up to the lesser of 10% of their annual base earnings or the IRS annual share purchase limit of $25,000 in aggregate market value to purchase the Company’s common stock. The purchase price of the stock is 85% of the closing market price on the date of purchase. Purchases occur on a quarterly basis (on the last trading day of each calendar quarter). The Company recognizes expense for ESPP purchase rights equal to the value of the 15% discount given on the purchase date.

2017 Equity Incentive Plan. At the Company's Annual Meeting on May 17, 2017, stockholders approved the Ross Stores, Inc. 2017 Equity Incentive Plan ("2017 Plan") which replaced the Company's 2008 Equity Incentive Plan ("Predecessor Plan"). The 2017 Plan, which was authorized to issue a maximum of 12.0 million shares, was immediately effective upon approval and no further awards were granted under the Predecessor Plan, which was terminated.

Earnings Per Share

6 Months Ended

Jul. 29, 2017

Earnings Per Share [Abstract]

Earnings Per Share

The Company computes and reports both basic earnings per share ("EPS") and diluted EPS. Basic EPS is computed by dividing net earnings by the weighted average number of common shares outstanding for the period. Diluted EPS is computed by dividing net earnings by the sum of the weighted average number of common shares and dilutive common stock equivalents outstanding during the period. Diluted EPS reflects the total potential dilution that could occur from outstanding equity plan awards, including unexercised stock options, and unvested shares of both performance and non-performance based awards of restricted stock.

For the three and six month periods ended July 29, 2017, approximately 650,500 and 462,900 weighted average shares were excluded from the calculation of diluted EPS because their effect would have been anti-dilutive for the period presented. For the three and six month periods ended July 30, 2016, approximately 200 and 100 weighted average shares were excluded from the calculation of diluted EPS because their effect would have been anti-dilutive for the period presented.

The following is a reconciliation of the number of shares (denominator) used in the basic and diluted EPS computations:



	Three Months Ended							Six Months Ended
Shares in (000s)	Basic EPS		Effect of dilutive common stock equivalents			Diluted EPS		Basic EPS		Effect of dilutive common stock equivalents			Diluted EPS
July 29, 2017
Shares	383,011		2,560			385,571		384,722		2,935			387,657
Amount	$	0.83	$	(0.01	)	$	0.82	$	1.66	$	(0.02	)	$	1.64

July 30, 2016
Shares	393,568		2,362			395,930		394,684		2,697			397,381
Amount	$	0.72	$	(0.01	)	$	0.71	$	1.45	$	(0.01	)	$	1.44

Debt

6 Months Ended

Jul. 29, 2017

Debt Disclosure [Abstract]

Debt

Senior notes. Unsecured senior debt, net of unamortized discounts and debt issuance costs, consisted of the following:



($000)	July 29, 2017		January 28, 2017		July 30, 2016
6.38% Series A Senior Notes due 2018	$	84,956	$	84,939	$	84,923
6.53% Series B Senior Notes due 2021	64,912		64,902		64,892
3.375% Senior Notes due 2024	246,861		246,652		246,444
Total	$	396,729	$	396,493	$	396,259

As of July 29, 2017, the Company had outstanding unsecured 3.375% Senior Notes due September 2024 (the “2024 Notes”) with an aggregate principal amount of $250 million. Interest on the 2024 Notes is payable semi-annually.

As of July 29, 2017, the Company also had outstanding two other series of unsecured senior notes in the aggregate principal amount of $150 million, held by various institutional investors. The Series A notes totaling $85 million are due in December 2018 and bear interest at 6.38%. The Series B notes totaling $65 million are due in December 2021 and bear interest at 6.53%. Borrowings under these senior notes are subject to certain financial covenants, including interest coverage and other financial ratios. As of July 29, 2017, the Company was in compliance with these covenants.

As of July 29, 2017, January 28, 2017, and July 30, 2016, total unamortized discount and debt issuance costs were $3.3 million, $3.5 million, and $3.7 million, respectively, and were classified as a reduction of Long-term debt.

The 2024 Notes, Series A, and Series B senior notes are all subject to prepayment penalties for early payment of principal.

The aggregate fair value of the three outstanding senior note issuances was approximately $421 million, $419 million, and $442 million as of July 29, 2017, January 28, 2017, and July 30, 2016, respectively. The fair value is estimated by obtaining comparable market quotes which are considered to be Level 1 inputs under the fair value measurements and disclosures guidance.

The table below shows the components of interest expense and income for the three and six month periods ended July 29, 2017 and July 30, 2016:



	Three Months Ended						Six Months Ended
($000)	July 29, 2017			July 30, 2016			July 29, 2017			July 30, 2016
Interest expense on long-term debt	$	4,644		$	4,643		$	9,288		$	9,286
Other interest expense	233			230			502			553
Capitalized interest	(120		)	(5		)	(182		)	(9		)
Interest income	(2,416		)	(655		)	(4,098		)	(1,253		)
Interest expense, net	$	2,341		$	4,213		$	5,510		$	8,577

Revolving credit facility. The Company's $600 million unsecured revolving credit facility expires in April 2021 and contains a $300 million sublimit for issuance of standby letters of credit (subject to increase in proportion to any increase in the size of the credit facility). The facility also contains an option allowing the Company to increase the size of its credit facility by up to an additional $200 million, with the agreement of the lenders. Interest on any borrowings under this facility is based on LIBOR plus an applicable margin (currently 100 basis points) and is payable quarterly and upon maturity. The revolving credit facility may be extended, at the Company’s option, for an additional one year period, subject to customary conditions. As of July 29, 2017, the Company had no borrowings or standby letters of credit outstanding under this facility and the $600 million credit facility remains in place and available.

The revolving credit facility is subject to a financial leverage ratio covenant. As of July 29, 2017, the Company was in compliance with this covenant.

Taxes on Earnings	6 Months Ended
Taxes on Earnings	Jul. 29, 2017
Income Tax Disclosure [Abstract]
Taxes on Earnings	Taxes on Earnings For the six month period ended July 29, 2017, $15.1 million of excess tax benefits related to stock-based compensation were recognized as a reduction to the provision for taxes on earnings as a result of the adoption of ASU 2016-09. Please refer to Note A for more details regarding the adoption of ASU 2016-09. As of July 29, 2017, January 28, 2017, and July 30, 2016, the reserves for unrecognized tax benefits were $108.1 million, $98.6 million, and $105.4 million inclusive of $20.1 million, $17.5 million, and $21.7 million of related interest and penalties, respectively. The Company accounts for interest and penalties related to unrecognized tax benefits as a part of its provision for taxes on earnings. If recognized, $55.2 million would impact the Company’s effective tax rate. The difference between the total amount of unrecognized tax benefits and the amounts that would impact the effective tax rate relates to amounts attributable to deferred income tax assets and liabilities. These amounts are net of federal and state income taxes. It is reasonably possible that certain federal and state tax matters may be concluded or statutes of limitations may lapse during the next twelve months. Accordingly, the total amount of unrecognized tax benefits may decrease, reducing the provision for taxes on earnings by up to $3.1 million. The Company is open to audit by the Internal Revenue Service under the statute of limitations for fiscal years 2013 through 2016. The Company’s state income tax returns are generally open to audit under the various statutes of limitations for fiscal years 2012 through 2016. Certain federal and state tax returns are currently under audit by various tax authorities. The Company does not expect the results of these audits to have a material impact on the consolidated financial statements.

Summary of Significant Accounting Policies (Policies)	6 Months Ended
Summary of Significant Accounting Policies (Policies)	Jul. 29, 2017
Accounting Policies [Abstract]
Basis of presentation	Basis of presentation. The accompanying unaudited interim condensed consolidated financial statements have been prepared from the records of Ross Stores, Inc. and subsidiaries (the “Company”) without audit and, in the opinion of management, include all adjustments (consisting of only normal, recurring adjustments) necessary to present fairly the Company’s financial position as of July 29, 2017 and July 30, 2016, the results of operations and comprehensive income for the three and six month periods ended July 29, 2017 and July 30, 2016, and cash flows for the six month periods ended July 29, 2017 and July 30, 2016. The Condensed Consolidated Balance Sheet as of January 28, 2017, presented herein, has been derived from the Company’s audited consolidated financial statements for the fiscal year then ended. Accounting policies followed by the Company are described in Note A to the audited consolidated financial statements for the fiscal year ended January 28, 2017. Certain information and disclosures normally included in the notes to annual consolidated financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been condensed or omitted for purposes of these interim condensed consolidated financial statements. The interim condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements, including notes thereto, contained in the Company’s Annual Report on Form 10-K for the year ended January 28, 2017. The results of operations and comprehensive income for the three and six month periods ended July 29, 2017 and July 30, 2016 presented herein are not necessarily indicative of the results to be expected for the full fiscal year.
Restricted cash, cash equivalents and investments	Restricted cash, cash equivalents, and investments. The Company has restricted cash, cash equivalents, and investments that serve as collateral for certain insurance obligations of the Company. These restricted funds are invested in bank deposits, money market mutual funds, U.S. Government and agency securities, and corporate securities and cannot be withdrawn from the Company’s account without the prior written consent of the secured parties.
Property and equipment	Property and equipment. As of July 29, 2017 and July 30, 2016, the Company had $6.5 million and $4.6 million, respectively, of property and equipment purchased but not yet paid. These purchases are included in Property and Equipment, Accounts payable, and Accrued expenses and other in the accompanying Condensed Consolidated Balance Sheets.
Litigation, claims, and assessments	Litigation, claims, and assessments. Like many retailers, the Company has been named in class action lawsuits, primarily in California, alleging violation of wage and hour/employment laws and consumer protection laws. Class action litigation remains pending as of July 29, 2017. The Company is also party to various other legal and regulatory proceedings arising in the normal course of business. Actions filed against the Company may include commercial, product and product safety, consumer, intellectual property, and labor and employment-related claims, including lawsuits in which private plaintiffs or governmental agencies allege that the Company violated federal, state, and/or local laws. Actions against the Company are in various procedural stages. Many of these proceedings raise factual and legal issues and are subject to uncertainties. In the opinion of management, the resolution of pending class action litigation and other currently pending legal and regulatory proceedings will not have a material adverse effect on the Company’s financial condition, results of operations, or cash flows.
Recently issued and adopted accounting standards	Recently issued accounting standards. In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (ASU) 2014-09, Revenue from Contracts with Customers (Topic 606). The guidance provides a five-step analysis of transactions to determine when and how revenue is recognized. The core principle of the guidance is that a company should recognize revenue when the customer obtains control of promised goods or services in an amount that reflects the consideration which the company expects to receive in exchange for those goods or services. ASU 2014-09 is effective for the Company’s annual and interim reporting periods beginning in fiscal 2018. While the Company does not expect the adoption of this new guidance to be material to its consolidated financial statements, it does expect adoption to result in a change in the timing of recognizing revenue from breakage for stored value cards. Breakage will be estimated and recognized based upon the historical pattern of redemption, rather than when redemption is considered remote. Additionally, the Company expects to recognize allowances for estimated sales returns on a gross rather than net basis in the Consolidated Financial Statements. The Company expects to adopt the new standard under the modified retrospective method and will recognize a cumulative-effect adjustment in retained earnings as of the adoption date. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842). The ASU requires balance sheet recognition for all leases with lease terms greater than one year including a lease liability, which is a lessee‘s obligation to make lease payments arising from a lease, measured on a discounted basis; and a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. ASU 2016-02 is effective for the Company's annual and interim reporting periods beginning in fiscal 2019. The Company is currently evaluating the effect adoption of this new guidance will have on its consolidated financial statements. Due to the substantial number of leases that it has, the Company believes this ASU will increase assets and liabilities by the same material amount on its consolidated balance sheet. The Company's current undiscounted minimum commitments under noncancelable operating leases is approximately $3.6 billion. The Company does not believe adoption of this ASU will have a significant impact to its consolidated statements of earnings, stockholders’ equity, and cash flows. In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash. ASU 2016-18 requires restricted cash and restricted cash equivalents be included with cash and cash equivalents when reconciling the total beginning and ending amounts on the statement of cash flows. The standard also requires companies who report cash and restricted cash separately on the balance sheet to reconcile those amounts to the statement of cash flows. ASU 2016-18 is effective for the Company's annual and interim reporting periods beginning in fiscal 2018. The Company does not believe adoption of this ASU will have a significant impact to its consolidated financial statements. Recently adopted accounting standards. In March 2016, the FASB issued ASU 2016-09, Compensation - Stock Compensation (Topic 718) - Improvements to Employee Share-Based Payment Accounting. ASU 2016-09 provides for changes to accounting for stock compensation including 1) excess tax benefits and tax deficiencies related to share based payment awards will be recognized as income tax benefit or expense in the reporting period in which they occur (previously such amounts were recognized in additional paid-in capital); 2) excess tax benefits will be classified as an operating activity in the statement of cash flows; and 3) the option to elect to estimate forfeitures or account for them when they occur. The impact of recording excess tax benefits in income taxes in the Condensed Consolidated Statement of Earnings may be material depending upon the Company's future stock price on vest date in relation to the fair value of awards on grant date and the Company's future grants of stock-based compensation. The Company adopted ASU 2016-09 in the first quarter of fiscal 2017 and elected to apply this adoption prospectively, except for forfeitures which it adopted on a modified retrospective basis. Accordingly, prior periods have not been adjusted. As a result of adoption, for the six month period ended July 29, 2017, the Company recognized $15.1 million of excess tax benefits related to share-based payments as a reduction to its provision for income taxes. These items were historically recorded in additional paid-in capital. The Company also presented cash flows related to excess tax benefits as an operating activity in the Condensed Consolidated Statement of Cash Flows and elected to account for forfeitures as incurred beginning on January 29, 2017. The impact of this accounting policy election for forfeitures was a cumulative-effect adjustment to decrease retained earnings by $1.1 million, net of tax, as of January 29, 2017.

Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jul. 29, 2017

Accounting Policies [Abstract]

Schedule of restricted cash, cash equivalents and investments

The following table summarizes total restricted cash, cash equivalents, and investments which were included in Prepaid expenses and other and Other long-term assets in the Condensed Consolidated Balance Sheets as of July 29, 2017, January 28, 2017, and July 30, 2016:



Restricted Assets ($000)	July 29, 2017		January 28, 2017		July 30, 2016
Prepaid expenses and other	$	13,683	$	13,642	$	15,798
Other long-term assets	54,732		54,567		56,010
Total	$	68,415	$	68,209	$	71,808

Fair Value Measurements (Tables)

6 Months Ended

Jul. 29, 2017

Fair Value Disclosures [Abstract]

Schedule of fair values

The fair value of the Company’s financial instruments are as follows:



($000)	July 29, 2017		January 28, 2017		July 30, 2016
Cash and cash equivalents (Level 1)	$	1,150,932	$	1,111,599	$	927,718

Investments (Level 2)	$	1,259	$	1,288	$	2,538

Restricted cash and cash equivalents (Level 1)	$	64,838	$	64,581	$	68,101

Restricted investments
Level 1	$	—	$	—	$	3,707
Level 2	$	3,577	$	3,628	$	—

Schedule of fair value, assets and liabilities measured on recurring basis

The fair value measurement for funds with quoted market prices in active markets (Level 1) and for funds without quoted market prices in active markets (Level 2) are as follows:



($000)	July 29, 2017		January 28, 2017		July 30, 2016
Level 1	$	97,282	$	84,933	$	83,651
Level 2	17,429		15,490		16,317
Total	$	114,711	$	100,423	$	99,968

Stock-Based Compensation (Tables)

6 Months Ended

Jul. 29, 2017

Share-based Compensation [Abstract]

Schedule of stock-based compensation expense by award type

For the three and six month periods ended July 29, 2017 and July 30, 2016, the Company recognized stock-based compensation expense as follows:



	Three Months Ended				Six Months Ended
($000)	July 29, 2017		July 30, 2016		July 29, 2017		July 30, 2016
Restricted stock	$	11,019	$	9,484	$	21,720	$	18,549
Performance awards	10,670		8,290		19,453		16,239
Employee stock purchase plan	792		716		1,546		1,418
Total	$	22,481	$	18,490	$	42,719	$	36,206

Total stock-based compensation recognized in the condensed consolidated statements of earnings



	Three Months Ended				Six Months Ended
Statements of Earnings Classification ($000)	July 29, 2017		July 30, 2016		July 29, 2017		July 30, 2016
Cost of goods sold	$	10,316	$	8,278	$	20,111	$	16,108
Selling, general and administrative	12,165		10,212		22,608		20,098
Total	$	22,481	$	18,490	$	42,719	$	36,206

Unvested restricted stock activity

A summary of restricted stock and performance share award activity for the six month period ended July 29, 2017 is presented below:



(000, except per share data)	Number of shares		Weighted average grant date fair value
Unvested at January 28, 2017	5,563		$	43.19
Awarded	1,185		65.16
Released	(1,494	)	37.99
Forfeited	(29	)	49.75
Unvested at July 29, 2017	5,225		$	50.39

Earnings Per Share (Tables)

6 Months Ended

Jul. 29, 2017

Earnings Per Share [Abstract]

Reconciliation of the number of shares (denominator) used in the basic and diluted EPS computations

The following is a reconciliation of the number of shares (denominator) used in the basic and diluted EPS computations:



	Three Months Ended							Six Months Ended
Shares in (000s)	Basic EPS		Effect of dilutive common stock equivalents			Diluted EPS		Basic EPS		Effect of dilutive common stock equivalents			Diluted EPS
July 29, 2017
Shares	383,011		2,560			385,571		384,722		2,935			387,657
Amount	$	0.83	$	(0.01	)	$	0.82	$	1.66	$	(0.02	)	$	1.64

July 30, 2016
Shares	393,568		2,362			395,930		394,684		2,697			397,381
Amount	$	0.72	$	(0.01	)	$	0.71	$	1.45	$	(0.01	)	$	1.44

Debt (Tables)

6 Months Ended

Jul. 29, 2017

Debt Disclosure [Abstract]

Schedule of long-term debt

Unsecured senior debt, net of unamortized discounts and debt issuance costs, consisted of the following:



($000)	July 29, 2017		January 28, 2017		July 30, 2016
6.38% Series A Senior Notes due 2018	$	84,956	$	84,939	$	84,923
6.53% Series B Senior Notes due 2021	64,912		64,902		64,892
3.375% Senior Notes due 2024	246,861		246,652		246,444
Total	$	396,729	$	396,493	$	396,259

Interest income and interest expense disclosure

The table below shows the components of interest expense and income for the three and six month periods ended July 29, 2017 and July 30, 2016:



	Three Months Ended						Six Months Ended
($000)	July 29, 2017			July 30, 2016			July 29, 2017			July 30, 2016
Interest expense on long-term debt	$	4,644		$	4,643		$	9,288		$	9,286
Other interest expense	233			230			502			553
Capitalized interest	(120		)	(5		)	(182		)	(9		)
Interest income	(2,416		)	(655		)	(4,098		)	(1,253		)
Interest expense, net	$	2,341		$	4,213		$	5,510		$	8,577

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21475-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e),(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21538-112644

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21506-112644

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28541-108399

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21521-112644

+ Details

Summary of Significant Accounting Policies (Restricted Cash, Cash Equivalents and Investments) (Details) - USD ($) $ in Thousands	Jul. 29, 2017	Jan. 28, 2017	Jul. 30, 2016
Accounting Policies [Abstract]
Prepaid expenses and other	$ 13,683	$ 13,642	$ 15,798
Other long-term assets	54,732	54,567	56,010
Total	$ 68,415	$ 68,209	$ 71,808

Summary of Significant Accounting Policies (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended							3 Months Ended		6 Months Ended
	Aug. 31, 2017	May 31, 2017	Feb. 28, 2017	Nov. 30, 2016	Aug. 31, 2016	May 31, 2016	Mar. 31, 2016	Jul. 29, 2017	Jul. 30, 2016	Jul. 29, 2017	Jul. 30, 2016	Jan. 29, 2017
Summary of Significant Accounting Policies [Line Items]
Cash dividends declared per share (in dollars per share)		$ 0.1600	$ 0.1600	$ 0.1350	$ 0.1350	$ 0.1350	$ 0.1350	$ 0.1600	$ 0.1350	$ 0.3200	$ 0.2700
Operating leases, future minimum payments due								$ 3,600.0		$ 3,600.0
Excess tax benefits related to stock-based compensation										15.1
Property, Plant and Equipment
Summary of Significant Accounting Policies [Line Items]
Property and equipment purchased but not yet paid										$ 6.5	$ 4.6
Subsequent Event
Summary of Significant Accounting Policies [Line Items]
Cash dividends declared per share (in dollars per share)	$ 0.1600
Retained Earnings \| Accounting Standards Update 2016-09
Summary of Significant Accounting Policies [Line Items]
Cumulative-effect adjustment												$ 1.1

Fair Value Measurements - Balance Sheet Items (Details) - USD ($) $ in Thousands	Jul. 29, 2017	Jan. 28, 2017	Jul. 30, 2016
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 1,150,932	$ 1,111,599	$ 927,718
Restricted cash and cash equivalents	64,838	64,581	68,101
Restricted investments	0	0	3,707
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	1,259	1,288	2,538
Restricted investments	$ 3,577	$ 3,628	$ 0

- Definition

Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

+ References + Details

Fair Value Measurements - Underlying Asset Value (Details) - USD ($) $ in Thousands	Jul. 29, 2017	Jan. 28, 2017	Jul. 30, 2016
Investment [Line Items]
Underlying assets in non-qualified deferred compensation program	$ 114,711	$ 100,423	$ 99,968
Level 1
Investment [Line Items]
Underlying assets in non-qualified deferred compensation program	97,282	84,933	83,651
Level 2
Investment [Line Items]
Underlying assets in non-qualified deferred compensation program	$ 17,429	$ 15,490	$ 16,317

Stock-Based Compensation (Recognized Stock-Based Compensation) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 29, 2017	Jul. 30, 2016	Jul. 29, 2017	Jul. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 22,481	$ 18,490	$ 42,719	$ 36,206
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	11,019	9,484	21,720	18,549
Performance awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	10,670	8,290	19,453	16,239
Employee stock purchase plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 792	$ 716	$ 1,546	$ 1,418

Stock-Based Compensation (Total Stock-Based Compensation Recognized In The Consolidated Statements Of Earnings) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 29, 2017	Jul. 30, 2016	Jul. 29, 2017	Jul. 30, 2016
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	$ 22,481	$ 18,490	$ 42,719	$ 36,206
Cost of goods sold
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	10,316	8,278	20,111	16,108
Selling, general and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	$ 12,165	$ 10,212	$ 22,608	$ 20,098

Stock-Based Compensation (Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jul. 29, 2017	Jul. 30, 2016	Jul. 29, 2017	Jul. 30, 2016	May 17, 2017	Jan. 28, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Tax benefit related to stock-based compensation	$ 7,800,000	$ 6,400,000	$ 14,800,000	$ 12,500,000
Plan participant's annual percentage ceiling for ESPP (up to)	10.00%		10.00%
Plan participant's annual dollar amount ceiling for ESPP (up to)			$ 25,000
Purchase price for shares under the ESPP (as a percentage)			85.00%
Discount rate under the ESPP (as a percentage)			15.00%
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Treasury shares purchased for tax withholding and available for reissuance (in shares)	69,934	45,063	646,747	682,060
Unvested restricted stock (in shares)	5,225,000		5,225,000			5,563,000
Unamortized compensation expense	$ 133,600,000	$ 118,900,000	$ 133,600,000	$ 118,900,000
Unamortized compensation expense, remaining weighted-average period of recognition (in years)			2 years 2 months 12 days	2 years 2 months 12 days
Minimum \| Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock vesting period (in years)			3 years
Minimum \| Performance Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Requisite service period (in years)			2 years
Maximum \| Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock vesting period (in years)			5 years
Maximum \| Performance Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Requisite service period (in years)			3 years
2017 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant (in shares)					12,000,000

Stock-Based Compensation (Unvested Restricted Stock Activity) (Details) - Restricted stock shares in Thousands	6 Months Ended
	Jul. 29, 2017 $ / shares shares
Number of shares
Unvested at January 28, 2017 (in shares) \| shares	5,563
Awarded (in shares) \| shares	1,185
Released (in shares) \| shares	(1,494)
Forfeited (in shares) \| shares	(29)
Unvested at July 29, 2017 (in shares) \| shares	5,225
Weighted average grant date fair value
Unvested at January 28, 2017 (in dollars per share) \| $ / shares	$ 43.19
Awarded (in dollars per share) \| $ / shares	65.16
Released (in dollars per share) \| $ / shares	37.99
Forfeited (in dollars per share) \| $ / shares	49.75
Unvested at July 29, 2017 (in dollars per share) \| $ / shares	$ 50.39

Earnings Per Share - Narrative (Details) - shares	3 Months Ended		6 Months Ended
Earnings Per Share - Narrative (Details) - shares	Jul. 29, 2017	Jul. 30, 2016	Jul. 29, 2017	Jul. 30, 2016
Earnings Per Share [Abstract]
Weighted average shares excluded from calculation of diluted EPS (in shares)	650,500	200	462,900	100

Earnings Per Share - Schedule of Basic and Diluted EPS Computations (Details) - $ / shares shares in Thousands	3 Months Ended		6 Months Ended
	Jul. 29, 2017	Jul. 30, 2016	Jul. 29, 2017	Jul. 30, 2016
Earnings Per Share [Abstract]
Basic EPS (in shares)	383,011	393,568	384,722	394,684
Basic EPS (in dollars per share)	$ 0.83	$ 0.72	$ 1.66	$ 1.45
Effect of dilutive common stock equivalents, (in shares)	2,560	2,362	2,935	2,697
Effect of dilutive common stock equivalents, (in dollars per share)	$ (0.01)	$ (0.01)	$ (0.02)	$ (0.01)
Diluted EPS (in shares)	385,571	395,930	387,657	397,381
Diluted EPS (in dollars per share)	$ 0.82	$ 0.71	$ 1.64	$ 1.44

Debt - Unsecured Senior Debt, Net of Unamortized Discounts and Issuance Costs (Details) - USD ($) $ in Thousands	Jul. 29, 2017	Jan. 28, 2017	Jul. 30, 2016
Debt Instrument [Line Items]
Long-term debt	$ 396,729	$ 396,493	$ 396,259
6.38% Series A Senior Notes due 2018
Debt Instrument [Line Items]
Long-term debt	84,956	84,939	84,923
6.53% Series B Senior Notes due 2021
Debt Instrument [Line Items]
Long-term debt	64,912	64,902	64,892
3.375% Senior Notes due 2024
Debt Instrument [Line Items]
Long-term debt	$ 246,861	$ 246,652	$ 246,444
Series A Senior Notes due 2018 \| 6.38% Series A Senior Notes due 2018
Debt Instrument [Line Items]
Unsecured senior notes interest rate	6.38%	6.38%	6.38%
Series B Senior Notes due 2021 \| 6.53% Series B Senior Notes due 2021
Debt Instrument [Line Items]
Unsecured senior notes interest rate	6.53%	6.53%	6.53%
Senior Notes due 2024 \| 3.375% Senior Notes due 2024
Debt Instrument [Line Items]
Unsecured senior notes interest rate	3.375%	3.375%	3.375%

Debt - Narrative (Details)	6 Months Ended
Debt - Narrative (Details)	Jul. 29, 2017 USD ($) note	Jan. 28, 2017 USD ($)	Jul. 30, 2016 USD ($)
Debt Instrument [Line Items]
Total unamortized discount and debt issuance costs	$ 3,300,000	$ 3,500,000	$ 3,700,000
3.375% Senior Notes due 2024
Debt Instrument [Line Items]
Debt instrument	250,000,000
Unsecured Series A and B Senior Notes
Debt Instrument [Line Items]
Debt instrument	150,000,000
Unsecured Revolving Credit Facility
Debt Instrument [Line Items]
Current borrowing capacity	600,000,000
Sublimit for issuance of standby letters of credit	300,000,000
Maximum borrowing capacity (up to)	$ 200,000,000
Basis points margin over LIBOR	1.00%
Renewal term	1 year
Borrowings or standby letters of credit	$ 0
Level 1
Debt Instrument [Line Items]
Unsecured senior notes estimated fair value	$ 421,000,000	$ 419,000,000	$ 442,000,000
3.375% Senior Notes due 2024 \| 3.375% Senior Notes due 2024
Debt Instrument [Line Items]
Unsecured senior notes interest rate	3.375%	3.375%	3.375%
Senior Note Held by Various Investors
Debt Instrument [Line Items]
Number of unsecured senior notes held \| note	2
6.38% Series A Senior Notes due 2018 \| 6.38% Series A Senior Notes due 2018
Debt Instrument [Line Items]
Unsecured senior notes interest rate	6.38%	6.38%	6.38%
Debt instrument	$ 85,000,000
6.53% Series B Senior Notes due 2021 \| 6.53% Series B Senior Notes due 2021
Debt Instrument [Line Items]
Unsecured senior notes interest rate	6.53%	6.53%	6.53%
Debt instrument	$ 65,000,000

Debt - Interest Expense, Net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 29, 2017	Jul. 30, 2016	Jul. 29, 2017	Jul. 30, 2016
Debt Disclosure [Abstract]
Interest expense on long-term debt	$ 4,644	$ 4,643	$ 9,288	$ 9,286
Other interest expense	233	230	502	553
Capitalized interest	(120)	(5)	(182)	(9)
Interest income	(2,416)	(655)	(4,098)	(1,253)
Interest expense, net	$ 2,341	$ 4,213	$ 5,510	$ 8,577

Taxes on Earnings (Details) - USD ($) $ in Millions	6 Months Ended
Taxes on Earnings (Details) - USD ($) $ in Millions	Jul. 29, 2017	Jan. 28, 2017	Jul. 30, 2016
Income Tax Contingency [Line Items]
Excess tax benefits related to stock-based compensation	$ 15.1
Unrecognized tax benefits	108.1	$ 98.6	$ 105.4
Income tax penalties and interest accrued	20.1	$ 17.5	$ 21.7
Impact of recognizing taxes and interest related to unrecognized tax benefits	55.2
Unrecognized tax benefits reduction resulting from lapse of applicable statute of limitations (up to)	$ 3.1
Maximum \| Internal Revenue Service
Income Tax Contingency [Line Items]
Open tax year	2016
Maximum \| State
Income Tax Contingency [Line Items]
Open tax year	2016
Minimum \| Internal Revenue Service
Income Tax Contingency [Line Items]
Open tax year	2013
Minimum \| State
Income Tax Contingency [Line Items]
Open tax year	2012