Share Repurchases - Additional Information (Details) (USD $)	1 Months Ended	3 Months Ended	4 Months Ended
Feb. 02, 2013	May 04, 2013	Feb. 25, 2012
Disclosure Share Repurchases Additional Information [Abstract]
Share repurchases, authorized amount	$ 1,000,000,000		$ 1,500,000,000
Share repurchases, remaining amount		$ 917,000,000

The remaining repurchase amount authorized by an entity's Board of Directors under a stock repurchase plan.

No definition available.

Name:	us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration