Income Taxes Unrecognized Tax Benefit Reconciliation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Income Tax Disclosure [Abstract]
Income Tax Examination, Interest Expense	$ 2	$ 3	$ 3
Accrued tax-related interest and penalties	19	17	20
Balance at beginning of year	73	78	79
Additions, current year	6	8	7
Additions, prior year	1	9	10
Reducitons, prior year	(14)	(12)	(12)
Unrecognized Tax Benefits, Increase Resulting from Settlements with Taxing Authorities	1
Settlements		(10)	(2)
Lapse in statute of limitations	(4)	0	(4)
Balance at end of year	$ 63	$ 73	$ 78