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Long-Term Debt (6.375% Senior Notes Due 2023) (Details) - USD ($) $ in Millions |  |  | 3 Months Ended
--- | --- | --- | ---
Oct. 04, 2016 | Apr. 01, 2015 | Mar. 31, 2017 | Mar. 31, 2016
Debt Instrument [Line Items] |  |  |  |
Proceeds from issuance of Senior Notes |  |  | $ 0 | $ 2,035
Senior Notes [Member] | 6.375% Senior Notes Due 2023 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Face amount |  | $ 800 |  |
Interest rate, stated percentage |  | 6.375% | 6.375% |
Proceeds from issuance of Senior Notes |  | $ 787 |  |
Liquidated damages in the form of additional interest | $ 2 |  |  |

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