Stockholders' Equity Reclassifications out of AOCI (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income Tax Expense (Benefit)		$ 152	$ 210	$ 524
Income (loss) from continuing operations after income taxes		941	1,216	1,822
Derivative Instruments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income Tax Expense (Benefit)	[1]	(4)	8	9
Income (loss) from continuing operations after income taxes		(12)	(55)	(4)
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[2]	(8)	(63)	(13)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		(12)	(55)	(4)
Unrealized gain (loss) on investments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income (loss) from continuing operations after income taxes		0	0	7
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[3]	0	0	7
Reclassification from AOCI, Current Period, Tax	[1]	0	0	0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		0	0	7
AOCI Attributable to Parent
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		(23)	(34)	(602)
Pension Plan
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		(2)	20	41
Pension Plan | Prior Service Benefit
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[3],[4]	(3)	(3)	(2)
Pension Plan | Actuarial Losses
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[3],[4]	0	3	55
Pension Plan | Accumulated Defined Benefit Plans Adjustment, Settlement Gain (Loss) [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[3],[4]	0	25	1
Pension Plan | Accumulated Defined Benefit Plans Adjustment Attributable to Parent
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax		(3)	25	54
Reclassification from AOCI, Current Period, Tax	[1]	1	(5)	(13)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		(2)	20	41
Other Benefit Plans
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		(9)	1	(646)
Other Benefit Plans | Prior Service Benefit
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[3],[4]	(2)	(1)	(922)
Other Benefit Plans | Actuarial Losses
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[3],[4]	(10)	2	81
Other Benefit Plans | Curtailment (loss) gain
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax		0	0	(1)
Other Benefit Plans | Accumulated Defined Benefit Plans Adjustment Attributable to Parent
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax		(12)	1	(842)
Reclassification from AOCI, Current Period, Tax	[1]	3	0	196
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		$ (9)	$ 1	$ (646)

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

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

[3] Reflected in other income (expense) - net in the Consolidated Statements of Operations.

[4] These accumulated other comprehensive income (loss) components are included in the computation of net periodic benefit (credit) cost of the company's pension and other benefit plans. See Note 18 - Pension Plans and Other Post-Employment Benefits, to the Consolidated Financial Statements, for additional information.