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v3.21.2

Segment Information - Disaggregation of Revenue by Major End Market Served (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Revenue, Major Customer [Line Items] |  |  |  |
Sales | $ 1,195 | $ 1,253 | $ 2,404 | $ 2,887
Third-party sales |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 1,195 | 1,253 | 2,404 | 2,885
Third-party sales | Engine Products |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 544 | 585 | 1,078 | 1,366
Third-party sales | Fastening Systems |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 262 | 326 | 534 | 711
Third-party sales | Engineered Structures |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 160 | 229 | 336 | 504
Third-party sales | Forged Wheels |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 229 | 113 | 456 | 304
Third-party sales | Aerospace - Commercial |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 468 | 680 | 923 | 1,628
Third-party sales | Aerospace - Commercial | Engine Products |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 260 | 312 | 487 | 819
Third-party sales | Aerospace - Commercial | Fastening Systems |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 129 | 224 | 277 | 481
Third-party sales | Aerospace - Commercial | Engineered Structures |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 79 | 144 | 159 | 328
Third-party sales | Aerospace - Commercial | Forged Wheels |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 0 | 0 | 0 | 0
Third-party sales | Aerospace - Defense |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 226 | 228 | 496 | 469
Third-party sales | Aerospace - Defense | Engine Products |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 121 | 125 | 272 | 252
Third-party sales | Aerospace - Defense | Fastening Systems |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 41 | 39 | 83 | 83
Third-party sales | Aerospace - Defense | Engineered Structures |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 64 | 64 | 141 | 134
Third-party sales | Aerospace - Defense | Forged Wheels |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 0 | 0 | 0 | 0
Third-party sales | Commercial Transportation |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 278 | 147 | 551 | 384
Third-party sales | Commercial Transportation | Engine Products |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 0 | 0 | 0 | 0
Third-party sales | Commercial Transportation | Fastening Systems |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 49 | 34 | 95 | 80
Third-party sales | Commercial Transportation | Engineered Structures |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 0 | 0 | 0 | 0
Third-party sales | Commercial Transportation | Forged Wheels |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 229 | 113 | 456 | 304
Third-party sales | Industrial and Other |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 223 | 198 | 434 | 404
Third-party sales | Industrial and Other | Engine Products |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 163 | 148 | 319 | 295
Third-party sales | Industrial and Other | Fastening Systems |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 43 | 29 | 79 | 67
Third-party sales | Industrial and Other | Engineered Structures |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 17 | 21 | 36 | 42
Third-party sales | Industrial and Other | Forged Wheels |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | $ 0 | $ 0 | $ 0 | $ 0

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