Accumulated Other Comprehensive (Loss) Income (AOCI), Summary of AOCI Balances Including Amounts Reclassified from AOCI into Net Income (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Jun. 24, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	$ 4,553
Other comprehensive income before reclassifications, net of tax	72	$ 10
Amounts reclassified from AOCI, net of tax	18	20
Net current period other comprehensive income	90	30
Ending Balance	4,976
Accumulated Other Comprehensive Loss [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	(726)	(574)
Ending Balance	(636)	(544)
Foreign Currency Translation [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	(178)	(101)
Other comprehensive income before reclassifications, net of tax	71	4
Amounts reclassified from AOCI, net of tax	0	0
Net current period other comprehensive income	71	4
Ending Balance	(107)	(97)
Unrealized Gains on Hedging Instruments [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	6	(8)
Other comprehensive income before reclassifications, net of tax	1	6
Amounts reclassified from AOCI, net of tax	(1)	4
Net current period other comprehensive income	0	10
Ending Balance	6	2
Unrecognized (Losses) Gains and Prior Service Cost, Net [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	(554)	(465)
Other comprehensive income before reclassifications, net of tax	0	0
Amounts reclassified from AOCI, net of tax	19	16
Net current period other comprehensive income	19	16
Ending Balance	$ (535)	$ (449)