Accounting Policies - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 02, 2016	Jan. 02, 2016
Accounting Policies [Abstract]
Deferred Tax Assets, Net, Current		$ 227
Deferred Tax Liabilities, Net		9
Obligations placed in accounts payable tracking system	$ 566	501
Obligations sold by participating suppliers	392	$ 407
Excess Tax Benefit from Share-based Compensation, Operating Activities	$ 12