Restructuring and Other Charges - 2018 Actions (Details) $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($) employee	Dec. 31, 2019 USD ($) employee	Dec. 31, 2018 USD ($) employee position
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ 182	$ 582	$ 163
Gain (loss) on disposition of business, before tax	(8)	(63)	(43)
Pension Settlement Cost
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	8	9	96
Pension Curtailment Charge
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges			23
Postretirement Curtailment Benefit
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges			28
Restructuring Programs Layoffs
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges			$ 18
Restructuring Programs Layoffs Two Thousand Eighteen
Restructuring Cost and Reserve [Line Items]
Number of employees associated with layoff costs | position			125
Layoff costs
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ 113	$ 69
Number of employees associated with layoff costs | employee	4,301	917
Layoff costs | Engine Products
Restructuring Cost and Reserve [Line Items]
Number of employees associated with layoff costs | employee	1,706	103	34
Layoff costs | Fastening Systems
Restructuring Cost and Reserve [Line Items]
Number of employees associated with layoff costs | employee	1,675	132	55
Contract termination costs
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges			$ 12
Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ 6		9
Other Adjustments
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges			4
Other Exit Costs
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges			3
Reversal Of Prior Period Programs
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ (21)	$ (6)	(8)
Eger
Restructuring Cost and Reserve [Line Items]
Gain (loss) on disposition of business, before tax			(43)
New York office | Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges			$ 6
Corporate | Layoff costs
Restructuring Cost and Reserve [Line Items]
Number of employees associated with layoff costs | employee	23	494	36