Share Repurchase (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions |
3 Months Ended | 4 Months Ended | 6 Months Ended | 12 Months Ended | 43 Months Ended | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
May. 03, 2014 |
May. 28, 2015 |
Aug. 01, 2015 |
Jul. 31, 2015 |
Aug. 02, 2014 |
[2] | Jan. 31, 2015 |
Aug. 01, 2015 |
Jun. 30, 2015 |
May. 02, 2015 |
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| Share Repurchase Information | |||||||||||||||
| Total number of shares purchased | 15.2 | [1] | 0.6 | 65.1 | |||||||||||
| Average price paid per share | $ 81.41 | [1] | $ 55.36 | $ 67.19 | |||||||||||
| Total investment | $ 1,240.0 | [1] | $ 34.0 | $ 4,400.0 | |||||||||||
| Shares delivered upon noncash settlement of prepaid contracts | 0.1 | ||||||||||||||
| Original cash investment of shares delivered upon noncash settlement | $ 1,243.0 | $ 46.0 | |||||||||||||
| Repurchase of Share Repurchase Program 2015 | |||||||||||||||
| Share Repurchase Information | |||||||||||||||
| Stock repurchase program, authorized amount | 10,000.0 | 10,000.0 | $ 5,000.0 | ||||||||||||
| Q2 ASR | |||||||||||||||
| Share Repurchase Information | |||||||||||||||
| Shares received | 3.8 | ||||||||||||||
| Price paid per share | $ 82.67 | ||||||||||||||
| Q2 ASR | Minimum | |||||||||||||||
| Share Repurchase Information | |||||||||||||||
| Stock repurchase program, authorized amount | 250.0 | 250.0 | |||||||||||||
| Q2 ASR | Maximum | |||||||||||||||
| Share Repurchase Information | |||||||||||||||
| Stock repurchase program, authorized amount | 350.0 | $ 350.0 | |||||||||||||
| Q2 ASR | June 1, 2015 to July 31, 2015 | |||||||||||||||
| Share Repurchase Information | |||||||||||||||
| Cash received | $ 314.0 | ||||||||||||||
| Q1 ASR | |||||||||||||||
| Share Repurchase Information | |||||||||||||||
| Shares received | 3.3 | ||||||||||||||
| Price paid per share | $ 80.74 | ||||||||||||||
| Q1 ASR | Minimum | |||||||||||||||
| Share Repurchase Information | |||||||||||||||
| Stock repurchase program, authorized amount | $ 200.0 | ||||||||||||||
| Q1 ASR | Maximum | |||||||||||||||
| Share Repurchase Information | |||||||||||||||
| Stock repurchase program, authorized amount | $ 300.0 | ||||||||||||||
| Q1 ASR | February 1, 2015 to May 28, 2015 | |||||||||||||||
| Share Repurchase Information | |||||||||||||||
| Cash received | $ 265.0 | ||||||||||||||
| Cash Investment | |||||||||||||||
| Share Repurchase Information | |||||||||||||||
| Original cash investment of shares delivered upon noncash settlement | $ 34.0 | 3.0 | |||||||||||||
| Prepaid Forward Contracts Market Value | |||||||||||||||
| Share Repurchase Information | |||||||||||||||
| Aggregate market value | $ 34.7 | $ 7.0 | |||||||||||||
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