Stock-Based Compensation Plans (Non-Vested RSUs) (Details) (Restricted Stock Units [Member], USD $) In Millions, unless otherwise specified	9 Months Ended
May 08, 2011
Restricted Stock Units [Member]
Unrecognized compensation cost	$ 444
Weighted average period of time (in years)	1.8

As of the latest balance-sheet date presented, the total compensation cost related to outstanding, nonvested share-based compensation awards not yet recognized (will be charged against earnings as services are performed or other vesting criteria are met).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph A240
-Subparagraph h

Name:	us-gaap_EmployeeServiceShareBasedCompensationUnrecognizedCompensationCostsOnNonvestedAwards
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant