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Restructuring and Other Charges - 2018 Actions (Details) $ in Millions | 12 Months Ended
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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

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