Debt - Additional Information (Detail) (USD $)	12 Months Ended
Jan. 30, 2015	Jan. 31, 2014
Debt Instrument [Line Items]
Fair value adjustment	$ 17,000,000us-gaap_LiabilitiesFairValueAdjustment
Gain (loss) on extinguishment of debt	5,000,000
Notes Which Mature In December 2020
Debt Instrument [Line Items]
Senior unsecured notes	466,000,000	449,000,000
Note payable, face amount	450,000,000
Stated interest rate	4.45%
Notes Which Mature In December 2040
Debt Instrument [Line Items]
Senior unsecured notes	232,000,000	300,000,000
Note payable, face amount	300,000,000
Stated interest rate	5.95%
Notes Which Mature In July 2033
Debt Instrument [Line Items]
Senior unsecured notes	182,000,000	296,000,000
Note payable, face amount	300,000,000
Stated interest rate	5.50%
Other Income, Net \| Notes Payable
Debt Instrument [Line Items]
Amortization of financing costs	1,000,000
Senior Notes [Member]
Debt Instrument [Line Items]
Repayments of debt	175,000,000
Senior Notes [Member] \| Notes Which Mature In December 2040
Debt Instrument [Line Items]
Debt repurchased amount	67,000,000
Gain (loss) on extinguishment of debt	3,000,000
Senior Notes [Member] \| Notes Which Mature In July 2033
Debt Instrument [Line Items]
Debt repurchased amount	116,000,000
Gain (loss) on extinguishment of debt	$ 2,000,000

Amortization of Deferred Debt Issuance Cost And Debt Discount

No definition available.

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- Definition

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

+ References

Reference 1: 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=6451184&loc=d3e28551-108399

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-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

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- Definition

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

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: 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(a)(1))

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- Definition

Fair value amount of debt instrument that was repurchased.

+ References

No definition available.

+ Details

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- Definition

Amount of gain (loss) from the difference between the repurchase price of a debt instrument initially issued by the entity and the net carrying amount of the debt at the time of its repurchase.

+ References

No definition available.

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- Definition

Amount of addition (reduction) to the amount at which a liability could be incurred (settled) in a current transaction between willing parties.

+ References

No definition available.

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- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585

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

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-Name Accounting Standards Codification

-Glossary Financing Activities

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- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16(a))

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

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