Pension and Retiree Medical Benefits Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 12, 2021	Jun. 13, 2020	Jun. 12, 2021	Jun. 13, 2020
Domestic Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Contributions by Employer, Discretionary				$ 150
Defined Benefit Plan, Service Cost	$ 120	$ 100	$ 240	200
Defined Benefit Plan, Interest Cost	74	100	149	200
Defined Benefit Plan, Expected Return (Loss) on Plan Assets	(224)	(215)	(448)	(429)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	(7)	2	(14)	5
Defined Benefit Plan, Amortization of Gain (Loss)	52	46	103	91
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Curtailment	0	0	0	0
Defined Benefit Plan, Cost of Providing Special and Contractual Termination Benefits		1	5	7
Defined Benefit Plan, Benefit Obligation, Special and Contractual Termination Benefits	(1)
Defined Benefit Plan, Other Cost (Credit)	(106)	(66)	(205)	(126)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	14	34	35	74
Foreign Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Contributions by Employer, Discretionary				14
Defined Benefit Plan, Service Cost	25	20	44	37
Defined Benefit Plan, Interest Cost	19	21	32	37
Defined Benefit Plan, Expected Return (Loss) on Plan Assets	(57)	(49)	(98)	(86)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	(1)	0	(1)	0
Defined Benefit Plan, Amortization of Gain (Loss)	19	16	32	26
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Curtailment	5	0	5	0
Defined Benefit Plan, Cost of Providing Special and Contractual Termination Benefits	0	0	0	0
Defined Benefit Plan, Other Cost (Credit)	(15)	(12)	(30)	(23)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	10	8	14	14
Retiree Medical Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Service Cost	7	5	15	11
Defined Benefit Plan, Interest Cost	4	5	7	11
Defined Benefit Plan, Expected Return (Loss) on Plan Assets	(3)	(4)	(7)	(8)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	(3)	(2)	(5)	(5)
Defined Benefit Plan, Amortization of Gain (Loss)	(3)	(5)	(6)	(10)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Curtailment	0	0	0	0
Defined Benefit Plan, Cost of Providing Special and Contractual Termination Benefits	0	0	0	0
Defined Benefit Plan, Other Cost (Credit)	(5)	(6)	(11)	(12)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	$ 2	$ (1)	$ 4	$ (1)