Number of Unsecured Senior Notes Held

No definition available.

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- Definition

Sublimit for issuance of standby letters of credit

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
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- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13433-108611

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Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of unamortized debt discount (premium) and debt issuance costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
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-Paragraph 4
-Subparagraph (b)(2)
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Balance Type:	debit
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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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- Details

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- Details

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Name:	us-gaap_LongtermDebtTypeAxis=rost_UnsecuredRevolvingCreditFacilityMember
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Debt - Narrative (Details)	6 Months Ended
Debt - Narrative (Details)	Aug. 04, 2018 USD ($) note	Feb. 03, 2018 USD ($)	Jul. 29, 2017 USD ($)
Debt Instrument [Line Items]
Total unamortized discount and debt issuance costs	$ 2,800,000	$ 3,000,000	$ 3,300,000
Unsecured Series A and B Senior Notes
Debt Instrument [Line Items]
Debt instrument	$ 150,000,000
6.38% Series A Senior Notes due 2018
Debt Instrument [Line Items]
Unsecured senior notes interest rate	6.38%
6.53% Series B Senior Notes due 2021
Debt Instrument [Line Items]
Unsecured senior notes interest rate	6.53%
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%
Borrowings or standby letters of credit	$ 0
Level 1
Debt Instrument [Line Items]
Unsecured senior notes estimated fair value	$ 403,000,000	$ 411,000,000	$ 421,000,000
3.375% Senior Notes due 2024
Debt Instrument [Line Items]
Unsecured senior notes interest rate	3.375%
Debt instrument	$ 250,000,000
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%
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%
Debt instrument	$ 65,000,000