Shareholders' Equity - Changes in AOCI (Details) - USD ($) $ in Millions	6 Months Ended
	Jul. 05, 2015	Jun. 29, 2014
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance,	$ (2,932)	$ (1,185)
Other comprehensive income (loss) before tax	(231)	122
Provision (benefit) for income tax, net	(71)	41
Other comprehensive income (loss) net of tax	(160)	81
Balance,	(3,092)	(1,104)
Gains (Losses) on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance,	(173)	9
Other comprehensive income (loss) before tax	(384)	(9)
Provision (benefit) for income tax, net	(135)	(3)
Other comprehensive income (loss) net of tax	(249)	(6)
Balance,	(422)	3
Unrealized Gains on Securities
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance,	22	15
Other comprehensive income (loss) before tax	0	6
Provision (benefit) for income tax, net	1	2
Other comprehensive income (loss) net of tax	(1)	4
Balance,	21	19
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance,	541	974
Other comprehensive income (loss) before tax	(35)	9
Provision (benefit) for income tax, net	(3)	1
Other comprehensive income (loss) net of tax	(32)	8
Balance,	509	982
Changes in Retirement Plans’ Funded Status
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance,	(3,322)	(2,183)
Other comprehensive income (loss) before tax	188	116
Provision (benefit) for income tax, net	66	41
Other comprehensive income (loss) net of tax	122	75
Balance,	$ (3,200)	$ (2,108)