Stockholders' Equity Reclassifications out of AOCI (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2022		Jun. 30, 2021		Jun. 30, 2022	Jun. 30, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts Reclassified from Accumulated Other Comprehensive Loss	$ (64)		$ (157)		$ (76)	$ (303)
Other Benefit Plans
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amortization of Prior Service Benefit	(1)	[1],[2]	(231)	[1],[2]	(1)	(461)
Pension Plan
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts Reclassified from Accumulated Other Comprehensive Loss					2	21
Other Benefit Plans
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts Reclassified from Accumulated Other Comprehensive Loss					0	(318)
Derivative Instruments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income (Loss), Current Period, before Tax	(86)	[3]	(10)	[3]	(101)	(15)
Reclassification from Accumulated Other Comprehensive Loss, Current Period, Tax	20	[4]	3	[4]	23	2
Amounts Reclassified from Accumulated Other Comprehensive Loss	(66)		(7)		(78)	(13)
Actuarial (Gains) Losses | Pension Plan
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income (Loss), Current Period, before Tax	1	[1],[2]	13	[1],[2]	2	27
Actuarial (Gains) Losses | Other Benefit Plans
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income (Loss), Current Period, before Tax	1	[1],[2]	24	[1],[2]	1	47
Settlement Loss | Pension Plan
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income (Loss), Current Period, before Tax	2	[1],[2]	0	[1],[2]	2	1
Accumulated Defined Benefit Plans Adjustment Attributable to Parent | Pension Plan
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income (Loss), Current Period, before Tax	2		12		2	27
Reclassification from Accumulated Other Comprehensive Loss, Current Period, Tax	0	[4]	(3)	[4]	0	(6)
Amounts Reclassified from Accumulated Other Comprehensive Loss	2		9		2	21
Accumulated Defined Benefit Plans Adjustment Attributable to Parent | Other Benefit Plans
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income (Loss), Current Period, before Tax	0		(208)		0	(415)
Reclassification from Accumulated Other Comprehensive Loss, Current Period, Tax	0	[4]	48	[4]	0	97
Amounts Reclassified from Accumulated Other Comprehensive Loss	0		(160)		0	(318)
Unrealized loss on investments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Loss, Current Period, Tax	0	[4]	0	[4]	0	0
Amounts Reclassified from Accumulated Other Comprehensive Loss	0	[1]	1	[1]	0	7
Prior Service Benefit | Pension Plan
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income (Loss), Current Period, before Tax	(1)		(1)		(2)	(1)
Accumulated Defined Benefit Plans Adjustment, Curtailment Gain (Loss) | Other Benefit Plans
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income (Loss), Current Period, before Tax	$ 0		$ (1)		$ 0	$ (1)

[1] Reflected in other income - net in the interim Consolidated Statements of Operations.

[2] These accumulated other comprehensive income (loss) components are included in the computation of net periodic benefit credit of the company's pension and other benefit plans. See Note 14 - Pension Plans and Other Post Employment Benefits, for additional information.

[3] Reflected in cost of goods sold in the interim Consolidated Statements of Operations.

[4] Reflected in provision for (benefit from) income taxes from continuing operations in the interim Consolidated Statements of Operations.