Derivative Instruments and Fair Value Measurements Schedule of Offsetting Assets and Liabilities (Details) - USD ($) $ in Millions	Jan. 02, 2016	Jan. 03, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Net amount of assets presented in the balance sheet	$ 33	$ 43
Financial instruments, gross amount not offset in balance sheet	(12)	(29)
Cash collateral posted, gross amount not offset in balance sheet	0	0
Net amount, assets derivatives	21	14
Net amounts of liabilities presented in balance sheet	(63)	(88)
Financial instruments, gross amount not offset in balance sheet	12	29
Cash collateral received, gross amount not offset in balance sheet	51	50
Net amount, liabilities derivatives	$ 0	$ (9)