Stockholders' Equity (Common Stock) (Details) (USD $) Share data in Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Class of Stock [Line Items]
Stock repurchased program period	2 years
Stock repurchase program, approved amount	$ 1,400,000,000
Average repurchase (in dollars per share)	$ 74.30rost_AverageRepurchasePrice	$ 67.24rost_AverageRepurchasePrice	$ 60.34rost_AverageRepurchasePrice
Common stock repurchased, Value	550,000,000	550,000,000	450,000,000
Common Stock [Member]
Class of Stock [Line Items]
Common stock repurchased, Shares	(7,403)	(8,179)	(7,458)
Common stock repurchased, Value	$ 74,000	$ 82,000	$ 75,000

Average repurchase price

No definition available.

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- Details

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- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

-Article 5

+ Details

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- Definition

Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References

+ Details

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- Definition

Amount of stock repurchase plan authorized.

+ References

No definition available.

+ Details

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- Definition

Period which shares may be purchased under a stock repurchase plan authorized by an entity's Board of Directors, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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