Other Financial Data - Accrued Liabilities (Details) - USD ($) $ in Millions	Jul. 01, 2017	Dec. 31, 2016
Accrued Liabilities [Abstract]
Deferred revenue	$ 427	$ 439
Compensation	171	250
Billings in excess of costs and earnings	387	434
Tax liabilities	134	111
Dividend payable	76	77
Trade liabilities	174	180
Other	555	620
Accrued liabilities	$ 1,924	$ 2,111