Share Repurchases (Narrative) (Details) (USD $) Share data in Millions, unless otherwise specified	1 Months Ended		3 Months Ended		5 Months Ended	9 Months Ended		13 Months Ended
	Nov. 30, 2011	Nov. 30, 2009	Oct. 29, 2011	Oct. 30, 2010	Mar. 31, 2010	Oct. 29, 2011	Oct. 30, 2010	Feb. 28, 2011
Equity, Class of Treasury Stock [Line Items]
Share repurchases, authorized amount	$ 500,000,000	$ 500,000,000						$ 3,750,000,000
Stock repurchase program, utilized amount					500,000,000
Number of shares repurchased			39.2	15.1		106.5	67.3
Share repurchases, remaining amount						26,000,000
Total share repurchases, unpaid amount							9,000,000
The Fisher Family [Member]
Equity, Class of Treasury Stock [Line Items]
Number of shares repurchased							0.5
Repurchases of common stock, value							$ 10,000,000