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Equity Level 4 Equity Repurchase Program (Details) - USD ($) shares in Millions, $ in Millions | 2 Months Ended |
--- | --- | ---
Feb. 22, 2017 | Dec. 31, 2016
Class of Stock [Line Items] |  |
Stock Repurchase Program, Authorized Amount |  | $ 4,375
Stock Repurchase Program, Remaining Authorized Repurchase Amount |  | $ 1,300
Subsequent Event [Member] |  |
Class of Stock [Line Items] |  |
Treasury Stock, Shares, Acquired | 4 |
Treasury Stock, Value, Acquired, Cost Method | $ 192 |

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- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
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- Definition Amount remaining of a stock repurchase plan authorized. + References No definition available. + Details
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