Equity - Common Stock Repurchase (Details) - USD ($) shares in Millions, $ in Millions |
2 Months Ended | 12 Months Ended |
|---|---|---|
Oct. 27, 2015 |
Sep. 03, 2015 |
|
| Equity, Class of Treasury Stock [Line Items] | ||
| Treasury Stock, Value, Acquired, Cost Method | $ 831 | |
| Repurchases Authorized by the BOD [Member] | ||
| Equity, Class of Treasury Stock [Line Items] | ||
| Treasury Stock, Shares, Acquired | 42 | |
| Treasury Stock, Value, Acquired, Cost Method | $ 831 | |
| Subsequent Event [Member] | Repurchases Authorized by the BOD [Member] | ||
| Equity, Class of Treasury Stock [Line Items] | ||
| Stock Repurchase Program, Authorized Amount | $ 1,250 | |
| Stock Repurchase Program, Additional Authorized Amount | $ 250 |