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Commitments and Contingencies - Narrative (Details) $ in Millions |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Apr. 12, 2024 USD ($) | Jun. 30, 2024 USD ($) state claim subsidiary | Oct. 31, 2022 claim | Nov. 30, 2021 claim | Apr. 30, 2021 claim | Sep. 30, 2024 USD ($) | Jun. 30, 2024 USD ($) state claim subsidiary | Mar. 31, 2024 USD ($) | Jun. 30, 2023 USD ($) | Jun. 30, 2024 USD ($) state claim subsidiary defendant | Jun. 30, 2023 USD ($) | Dec. 31, 2024 USD ($) | Sep. 30, 2023 USD ($) | Nov. 30, 2022 claim | Mar. 31, 2022 subsidiary
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Environmental loss contingencies payment period |  |  |  |  |  |  |  |  |  | 20 years |  |  |  |  |
Conditional asset retirement obligations | $ |  | $ 8 |  |  |  |  | $ 8 |  |  | $ 8 |  |  | $ 13 |  |
Loss contingency, number of subsidiaries in civil enforcement action | subsidiary |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2
Reserve for environmental liabilities, current | $ |  | $ 37 |  |  |  |  | 37 |  |  | 37 |  |  | $ 31 |  |
Insurance receivables for asbestos-related liabilities | $ |  |  |  |  |  |  | $ 351 |  | $ 0 | $ 351 | $ 0 |  |  |  |
FTC-Related Remediation and Litigation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, pending claims, number | claim |  |  |  |  |  |  |  |  |  |  |  |  |  | 6 |
Aqueous Film Forming Foam ("AFFF") Litigation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, number of subsidiaries named in lawsuits | subsidiary |  | 2 |  |  |  |  | 2 |  |  | 2 |  |  |  |  |
AFFF Putative Class Actions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, pending claims, number | claim |  | 46 |  |  |  |  | 46 |  |  | 46 |  |  |  |  |
Loss contingency, pending claims, number of states originated from | state |  | 18 |  |  |  |  | 18 |  |  | 18 |  |  |  |  |
AFFF Individual or Mass Actions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, pending claims, number | claim |  | 7,800 |  |  |  |  | 7,800 |  |  | 7,800 |  |  |  |  |
Loss contingency, pending claims, number of states originated from | state |  | 52 |  |  |  |  | 52 |  |  | 52 |  |  |  |  |
AFFF Individual or Mass Actions | Colorado |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, number of defendants | defendant |  |  |  |  |  |  |  |  |  | 7,000 |  |  |  |  |
AFFF Individual or Mass Actions | United States, Excluding Colorado |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, number of defendants | defendant |  |  |  |  |  |  |  |  |  | 7,800 |  |  |  |  |
AFFF Municipal and Water Provider Cases |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, pending claims, number | claim |  | 950 |  |  |  |  | 950 |  |  | 950 |  |  |  |  |
Loss contingency, pending claims, number of states originated from | state |  | 35 |  |  |  |  | 35 |  |  | 35 |  |  |  |  |
Water Provider AFFF Settlement Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contribution to resolve settlement | $ | $ 750 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Settlement payment | $ |  | $ 250 |  |  |  |  |  |  |  |  |  |  |  |  |
Water provider AFFF settlement | $ |  |  |  |  |  |  |  | $ 750 |  |  |  |  |  |  |
Reserve for environmental liabilities, current | $ |  | $ 500 |  |  |  |  | $ 500 |  |  | $ 500 |  |  |  |  |
Water Provider AFFF Settlement Agreement | Forecast |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Settlement payment | $ |  |  |  |  |  | $ 90 |  |  |  |  |  |  |  |  |
Reserve for environmental liabilities, current | $ |  |  |  |  |  |  |  |  |  |  |  | $ 410 |  |  |
State or U.S. Territory Attorneys General Litigation Related to AFFF |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, pending claims, number | claim |  | 35 |  |  |  |  | 35 |  |  | 35 |  |  |  |  |
Loss contingency, pending claims, number of states originated from | state |  | 33 |  |  |  |  | 33 |  |  | 33 |  |  |  |  |
State or U.S. Territory Attorneys General Litigation Related to AFFF | Alaska |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, pending claims, number | claim |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |
Loss contingency, number of pending claims transferred to MDL | claim |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |
State or U.S. Territory Attorneys General Litigation Related to AFFF | North Carolina |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, pending claims, number | claim |  |  | 2 | 4 |  |  |  |  |  |  |  |  |  |  |
Loss contingency, number of pending claims transferred to MDL | claim |  |  | 2 | 4 |  |  |  |  |  |  |  |  |  |  |

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