Other Financial Data (Other Liabilities) (Details) - USD ($) $ in Millions	Oct. 03, 2015	Dec. 31, 2014
Other Liabilities [Abstract]
Defined benefit plans	$ 1,590	$ 1,611
Postretirement Health Care Benefit Plan	47	49
Deferred revenue	116	139
Unrecognized tax benefits	50	54
Other	166	158
Other liabilities	$ 1,969	$ 2,011