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v3.21.2

Segment Information - Disaggregation of Revenue by Major End Market Served (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Revenue, Major Customer [Line Items] |  |  |  |
Sales | $ 1,283 | $ 1,134 | $ 3,687 | $ 4,021
Third-party sales |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 1,283 | 1,134 | 3,687 | 4,019
Third-party sales | Engine Products |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 599 | 485 | 1,677 | 1,851
Third-party sales | Fastening Systems |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 254 | 271 | 788 | 982
Third-party sales | Engineered Structures |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 199 | 206 | 535 | 710
Third-party sales | Forged Wheels |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 231 | 172 | 687 | 476
Third-party sales | Aerospace - Commercial |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 543 | 472 | 1,466 | 2,100
Third-party sales | Aerospace - Commercial | Engine Products |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 299 | 199 | 786 | 1,018
Third-party sales | Aerospace - Commercial | Fastening Systems |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 126 | 169 | 403 | 650
Third-party sales | Aerospace - Commercial | Engineered Structures |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 118 | 104 | 277 | 432
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 | 232 | 261 | 728 | 730
Third-party sales | Aerospace - Defense | Engine Products |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 130 | 142 | 402 | 394
Third-party sales | Aerospace - Defense | Fastening Systems |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 37 | 37 | 120 | 120
Third-party sales | Aerospace - Defense | Engineered Structures |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 65 | 82 | 206 | 216
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 | 290 | 210 | 841 | 594
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 | 59 | 38 | 154 | 118
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 | 231 | 172 | 687 | 476
Third-party sales | Industrial and Other |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 218 | 191 | 652 | 595
Third-party sales | Industrial and Other | Engine Products |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 170 | 144 | 489 | 439
Third-party sales | Industrial and Other | Fastening Systems |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 32 | 27 | 111 | 94
Third-party sales | Industrial and Other | Engineered Structures |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | 16 | 20 | 52 | 62
Third-party sales | Industrial and Other | Forged Wheels |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Sales | $ 0 | $ 0 | $ 0 | $ 0

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