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Commitments and Contingencies (Narrative) (Detail) $ in Millions |  |  | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Aug. 12, 2022 USD ($) | Jun. 21, 2021 USD ($) | Sep. 30, 2014 USD ($) | Dec. 31, 2019 USD ($) | Sep. 30, 2023 USD ($) a | Dec. 31, 2022 USD ($)
Environmental Claims For A Site In Goodyear Arizona |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Accrual for environmental loss contingencies, revision in estimates |  |  | $ 49.0 | $ 18.9 |  |
Estimated liability |  |  |  |  | $ 21.7 | $ 24.8
Accrued environmental loss contingencies current |  |  |  |  | $ 7.8 | 7.7
Loss contingency reimbursement rate |  |  |  |  | 21.00% |
Other receivables |  |  |  |  | $ 3.8 | $ 4.8
Environmental Claims For Crab Orchard National Wildlife Refuge Superfund Site |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Approximate size of referenced site | a |  |  |  |  | 55,000 |
Asbestos Commitments and Contingencies |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Cash contributed in sale | $ 550.0 |  |  |  |  |
Goodyear Site |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Proceeds from sale of property |  | $ 8.7 |  |  |  |

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