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Claims, Lawsuits, and Other Contingencies - Legal Narrative (Details) - Fatal Plain Crash In November 2016 - Pending Litigation $ in Millions | 1 Months Ended | 3 Months Ended
--- | --- | ---
Jun. 30, 2025 USD ($) plaintiff | Dec. 31, 2022 plaintiff | Aug. 31, 2020 USD ($) plaintiff | Nov. 30, 2019 USD ($) defendant | Nov. 30, 2018 USD ($) | Sep. 30, 2025 USD ($) jurisdiction | Dec. 31, 2023 USD ($)
Legal, Guarantees and Indemnifications |  |  |  |  |  |  |
Damages sought | $ 16.7 |  | $ 844.0 |  | $ 16.0 |  |
Number of defendants | defendant |  |  |  | 3 |  |  |
Damages sought option 1 |  |  |  | $ 300.0 |  |  |
Damages sought option 2 |  |  |  | 50.0 |  |  |
Damages sought option 3 |  |  |  | $ 25.0 |  |  |
Number of plaintiffs | plaintiff | 43 | 43 | 43 |  |  |  |
Number of jurisdiction law | jurisdiction |  |  |  |  |  | 3 |
Litigation settlement expense |  |  |  |  |  | $ 23.0 | $ 197.0

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