Accumulated Other Comprehensive (Loss) Income (AOCI), Summary of AOCI Balances Including Amounts Reclassified from AOCI into Net Income (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 29, 2017	Sep. 23, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	$ 4,553
Other comprehensive (loss) income before reclassifications, net of tax	128	$ (25)
Amounts reclassified from AOCI, net of tax	25	32
Net current period other comprehensive (loss) income	153	7
Ending Balance	4,999
Accumulated Other Comprehensive Loss [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	(726)	(574)
Ending Balance	(573)	(567)
Foreign Currency Translation [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	(178)	(101)
Other comprehensive (loss) income before reclassifications, net of tax	120	(27)
Amounts reclassified from AOCI, net of tax	0	0
Net current period other comprehensive (loss) income	120	(27)
Ending Balance	(58)	(128)
Unrealized Gains (Losses) on Hedging Instruments [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Beginning Balance	6	(8)
Other comprehensive (loss) income before reclassifications, net of tax	8	2
Amounts reclassified from AOCI, net of tax	(2)	8
Net current period other comprehensive (loss) income	6	10
Ending Balance	12	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 (loss) income before reclassifications, net of tax	0	0
Amounts reclassified from AOCI, net of tax	27	24
Net current period other comprehensive (loss) income	27	24
Ending Balance	$ (527)	$ (441)