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Contract Assets and Liabilities (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 29, 2019
Dec. 31, 2018
Contract with Customer, Asset and Liability [Abstract]    
Current Contract Assets, Net $ 646 $ 459
Noncurrent Contract Asset, Net 13 15
Current Contract Liabilities 1,062 809
Noncurrent Contract Liabilities 532 $ 355
Revenue recognized that was included in the current contract liability balance at the beginning of the period $ 532