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Restructuring and Other Charges - Narrative (Details) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2021 USD ($) | Mar. 31, 2020 USD ($) employee
Restructuring Cost and Reserve [Line Items] |  |
Restructuring and other charges | $ 9 | $ 39
Settlements | 3 | 0
Accelerated depreciation | 1 |
Gain (loss) on sale of assets |  | 2
Pension benefits |  |
Restructuring Cost and Reserve [Line Items] |  |
Settlements | 3 | 0
Pension benefits | U.K. Forging Business |  |
Restructuring Cost and Reserve [Line Items] |  |
Settlements |  | 12
Asset Impairment Associated With Facility Closure | France Small Business |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring and other charges | 4 |
U.S. Pension Plan Settlement Accounting | Pension benefits |  |
Restructuring Cost and Reserve [Line Items] |  |
Settlements | 3 |
Reversal of prior period programs |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring and other charges | 1 | (2)
Layoff costs |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring and other charges | $ 4 | $ 22
Number of employees associated with layoff costs | employee |  | 460
Layoff costs | Corporate expense |  |
Restructuring Cost and Reserve [Line Items] |  |
Number of employees associated with layoff costs | employee |  | 23
Layoff costs | Engine Products |  |
Restructuring Cost and Reserve [Line Items] |  |
Number of employees associated with layoff costs | employee |  | 175
Layoff costs | Fastening Systems |  |
Restructuring Cost and Reserve [Line Items] |  |
Number of employees associated with layoff costs | employee |  | 106
Layoff costs | Engineered Structures |  |
Restructuring Cost and Reserve [Line Items] |  |
Number of employees associated with layoff costs | employee |  | 100
Layoff costs | Forged Wheels |  |
Restructuring Cost and Reserve [Line Items] |  |
Number of employees associated with layoff costs | employee |  | 56
Executive severance | U.K. Forging Business |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring and other charges |  | $ 6
Employee severance, life insurance benefits |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring and other charges |  | $ 3

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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk related to obligation and assets used to effect settlement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(7) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 3A -URI http://asc.fasb.org/extlink&oid=109237824&loc=SL108413299-114919 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(7) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920 + Details
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