Restructuring and Other Charges - Activity and Reserve Balances for Restructuring Charges (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Oct. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Restructuring Reserve [Roll Forward]
Restructuring reserve beginning balance		$ 54	$ 13	$ 22
Cash payments		(43)	(51)	(63)
Restructuring and other charges		90	182	582
Other		(82)	(90)	(528)
Restructuring reserve ending balance		19	54	13
Restructuring and other charges		90	182	582
Gain (loss) on sale of assets		12	3	1
Benefit from termination of plan			3
Impairment of assets to be disposed of		15	5
Accelerated depreciation		15	2
Pension benefits paid
Restructuring Reserve [Roll Forward]
Restructuring and other charges	$ 34		69
Settlements		69	76	9
Curtailment (charge) benefit		(6)	0	0
Other postretirement benefits
Restructuring Reserve [Roll Forward]
Settlements		0	0	0
Curtailment (charge) benefit		0	2	58
Layoff costs
Restructuring Reserve [Roll Forward]
Restructuring reserve beginning balance		54	13	13
Cash payments		(41)	(51)	(63)
Restructuring and other charges		79	161	58
Other		(75)	(69)	5
Restructuring reserve ending balance		17	54	13
Restructuring and other charges		7	113	69
Layoff costs | Pension benefits paid
Restructuring Reserve [Roll Forward]
Settlements		75	74
Other exit costs
Restructuring Reserve [Roll Forward]
Restructuring reserve beginning balance		0	0	9
Cash payments		(2)	0	0
Restructuring and other charges		11	21	524
Other		(7)	(21)	(533)
Restructuring reserve ending balance		2	0	0
Facility Closing
Restructuring Reserve [Roll Forward]
Restructuring and other charges		4	6
Elimination Of Life Insurance Benefits
Restructuring Reserve [Roll Forward]
Restructuring and other charges				16
Other, Pension Settlement Cost
Restructuring Reserve [Roll Forward]
Restructuring and other charges				9
Impairment Of Disks
Restructuring Reserve [Roll Forward]
Restructuring and other charges				428
Executive Severance Net Of The Benefit Of Forfeited Executive Stock Compensation
Restructuring Reserve [Roll Forward]
Restructuring and other charges				2
Asset Impairment Associated With The Sale Of Business
Restructuring Reserve [Roll Forward]
Restructuring and other charges				59
Impairment For Trade Name Intangible Asset And Fixed Assets
Restructuring Reserve [Roll Forward]
Restructuring and other charges				14
Other Exit Cost Lease Termination Loss
Restructuring Reserve [Roll Forward]
Restructuring and other charges				12
Other Miscellaneous Charges
Restructuring Reserve [Roll Forward]
Restructuring and other charges				7
Impairment Of A Cost Method Investment
Restructuring Reserve [Roll Forward]
Restructuring and other charges			5	5
Other Exit Costs, Reclassification Of Lease Exit Costs
Restructuring Reserve [Roll Forward]
Restructuring and other charges				$ 9
Asset Impairment Associated Facility Closure
Restructuring Reserve [Roll Forward]
Restructuring and other charges		$ 4	1
U.K. Forging Business | Facility Closing
Restructuring Reserve [Roll Forward]
Restructuring and other charges			$ 5