Debt - Extinguishment of Debt (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Dec. 01, 2011	Dec. 02, 2010
Extinguishment of Debt [Line Items]
Loss on extinguishment of debt	$ 0	$ 111
Repayments of convertible debt	48	635
Convertible Senior Notes Due 2014 [Member] | Exchanged [Member]
Extinguishment of Debt [Line Items]
Debt instrument, face value		175
Loss on extinguishment of debt		15
Convertible Senior Notes Due 2014 [Member] | Repurchased [Member]
Extinguishment of Debt [Line Items]
Debt instrument, face value		176
Loss on extinguishment of debt		17
Repayments of convertible debt		171
Convertible Senior Notes Due 2013 [Member] | Repurchased [Member]
Extinguishment of Debt [Line Items]
Debt instrument, face value		91
Loss on extinguishment of debt		79
Repayments of convertible debt		$ 166