Basis of Presentation - Recently Adopted Accounting Pronoucements (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | |||
---|---|---|---|---|---|
Sep. 29, 2018 |
Sep. 30, 2017 |
Sep. 29, 2018 |
Sep. 30, 2017 |
Dec. 31, 2017 |
|
Restatement Adjustment | Accounting Standards Update 2017-07 | Other income (expense) | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Net periodic benefit excluding service cost | $ 18 | $ 10 | $ 58 | $ 10 | |
Retained Earnings | Accounting Standards Update 2016-16 | |||||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
Cumulative effect of new accounting pronouncement | $ (31) |