Other Financial Data (Accrued Liabilities) (Details) - USD ($) $ in Millions	Jul. 02, 2016	Dec. 31, 2015
Accrued Liabilities [Abstract]
Deferred revenue	$ 361	$ 390
Compensation	166	241
Billings in excess of costs and earnings	291	337
Tax liabilities	65	48
Dividend payable	70	71
Trade liabilities	137	135
Other	541	449
Accrued liabilities	$ 1,631	$ 1,671