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Share Repurchase (Details) (USD $)
Share data in Millions, except Per Share data, unless otherwise specified |
3 Months Ended | 6 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | ||||||
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Jul. 28, 2012
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Jul. 30, 2011
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Jul. 28, 2012
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Jul. 30, 2011
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Jan. 28, 2012
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Nov. 30, 2007
2007 Share Repurchase Program
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Jan. 28, 2012
2012 Share Repurchase Program
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Jul. 28, 2012
Cash investment
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Jul. 30, 2011
Cash investment
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Jul. 28, 2012
Cash investment
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Jul. 30, 2011
Cash investment
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Jul. 28, 2012
Prepaid forward contracts market value
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Jul. 30, 2011
Prepaid forward contracts market value
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Jul. 28, 2012
Prepaid forward contracts market value
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Jul. 30, 2011
Prepaid forward contracts market value
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| Share Repurchase Information | |||||||||||||||
| Amount approved by board of directors for share repurchase program | $ 10,000,000,000 | $ 5,000,000,000 | |||||||||||||
| Total Number of Shares Purchased | 9.6 | 14.3 | 20.2 | 29.7 | |||||||||||
| Repurchase of stock, average price per share (in dollars per share) | $ 57.09 | $ 48.11 | $ 57.21 | $ 50.81 | |||||||||||
| Total Investment | 549,000,000 | 688,000,000 | 1,154,000,000 | 1,507,000,000 | |||||||||||
| Stock repurchased, delivered upon settlement of prepaid forward contracts (in shares) | 0.2 | 0.2 | 0.4 | 0.3 | |||||||||||
| Repurchase of stock | 1,154,000,000 | 1,894,000,000 | 11,000,000 | 7,000,000 | 23,000,000 | 14,000,000 | |||||||||
| Stock repurchased, delivered upon settlement of prepaid forward contracts | $ 11,000,000 | $ 7,000,000 | $ 24,000,000 | $ 14,000,000 | |||||||||||