Shareholders' Equity - Changes in AOCI (Details) - USD ($) $ in Millions	9 Months Ended
	Oct. 04, 2015	Sep. 28, 2014
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance,	$ (2,932)	$ (1,185)
Other comprehensive income (loss) before tax	(278)	(111)
Provision (benefit) for income tax, net	(25)	41
Other comprehensive income (loss) net of tax	(253)	(152)
Balance,	(3,185)	(1,337)
Gains (Losses) on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance,	(173)	9
Other comprehensive income (loss) before tax	(331)	(69)
Provision (benefit) for income tax, net	(115)	(18)
Other comprehensive income (loss) net of tax	(216)	(51)
Balance,	(389)	(42)
Unrealized Gains on Securities
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance,	22	15
Other comprehensive income (loss) before tax	(4)	7
Provision (benefit) for income tax, net	(1)	3
Other comprehensive income (loss) net of tax	(3)	4
Balance,	19	19
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance,	541	974
Other comprehensive income (loss) before tax	(230)	(226)
Provision (benefit) for income tax, net	(6)	(5)
Other comprehensive income (loss) net of tax	(224)	(221)
Balance,	317	753
Changes in Retirement Plans’ Funded Status
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance,	(3,322)	(2,183)
Other comprehensive income (loss) before tax	287	177
Provision (benefit) for income tax, net	97	61
Other comprehensive income (loss) net of tax	190	116
Balance,	$ (3,132)	$ (2,067)