Accumulated Other Comprehensive Loss Accumulated Other Comprehensive Loss Roll Forward (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 24, 2018		Mar. 25, 2017		Dec. 30, 2017		Dec. 31, 2016
Statement of Other Comprehensive Income [Abstract]
Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Post retirement Plans Taxes	$ 1,332		$ 1,275		$ 1,338		$ 1,280
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	(9,987)	[1]	(10,869)	[2]	(10,277)	[1]	(11,386)	[2]
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	75	[1]	56	[2]	47	[1]	83	[2]
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax	(2,780)	[1]	(2,636)	[2]	(2,804)	[1]	(2,645)	[2]
Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	(6)	[1]	68	[2]	(4)	[1]	64	[2]
Accumulated Other Comprehensive Income Loss Other	(19)	[1]	(35)	[2]	(19)	[1]	(35)	[2]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(12,717)	[1]	(13,416)	[2]	$ (13,057)	[1]	$ (13,919)	[2]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss), before Reclassification and Tax	288		513	[3]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	93		(3)	[3]
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment and Tax	(13)		(14)	[3]
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax	(2)		9	[3]
Other Comprehensive Income (Loss), before Reclassifications, before Tax	0		0	[3]
OCI, before Reclassifications, before Tax, Attributable to Parent	366		505	[3]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, before Tax	0		0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	(55)		(33)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax	43		28
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax	0		0
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	0		0
Reclassification from AOCI, Current Period, before Tax, Attributable to Parent	(12)		(5)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax	288		513
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax	38		(36)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax	30		14
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Tax	(2)		9
Other Comprehensive Income, Other, Before Tax	0		0
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	354		500
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax	2		4
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax	(10)		9
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax	(6)		(5)
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax			(5)
Other Comprehensive Income, Other, Taxes	0		0
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	$ (14)		$ 3

[1] Pension and retiree medical amounts are net of taxes of $1,338 million as of December 30, 2017 and $1,332 million as of March 24, 2018.

[2] (a)Pension and retiree medical amounts are net of taxes of $1,280 million as of December 31, 2016 and $1,275 million as of March 25, 2017.

[3] (b)Currency translation adjustment primarily reflects the appreciation in the Russian ruble, Egyptian pound and Australian dollar.