Shareholders' Equity - Changes in AOCI (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 03, 2016	Apr. 05, 2015
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, Period Start	$ (3,286)	$ (2,932)
Other comprehensive income (loss) pretax	414	(388)
Provision (benefit) for income tax, net	69	(104)
Other comprehensive income (loss) net of tax	345	(284)
Balance, Period End	(2,941)	(3,216)
Losses on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, Period Start	(487)	(173)
Other comprehensive income (loss) pretax	182	(383)
Provision (benefit) for income tax, net	45	(135)
Other comprehensive income (loss) net of tax	137	(248)
Balance, Period End	(350)	(421)
Unrealized Gains on Securities
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, Period Start	20	22
Other comprehensive income (loss) pretax	(9)	2
Provision (benefit) for income tax, net	(3)	2
Other comprehensive income (loss) net of tax	(6)	0
Balance, Period End	14	22
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, Period Start	178	541
Other comprehensive income (loss) pretax	181	(104)
Provision (benefit) for income tax, net	5	(5)
Other comprehensive income (loss) net of tax	176	(99)
Balance, Period End	354	442
Changes in Retirement Plans’ Funded Status
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, Period Start	(2,997)	(3,322)
Other comprehensive income (loss) pretax	60	97
Provision (benefit) for income tax, net	22	34
Other comprehensive income (loss) net of tax	38	63
Balance, Period End	$ (2,959)	$ (3,259)