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v3.23.1

Commitments and Contingencies - Narrative (Details) $ in Millions | 1 Months Ended | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Oct. 31, 2022 claim | Nov. 30, 2021 claim | Apr. 30, 2021 claim | Sep. 30, 2022 USD ($) | Mar. 31, 2023 USD ($) state claim defendant subsidiary | Nov. 30, 2022 claim | Mar. 31, 2022 subsidiary | Aug. 31, 2020 claim
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Accrual for environmental loss contingencies, period increase (decrease) | $ |  |  |  | $ 228 |  |  |  |
Environmental loss contingencies payment period |  |  |  | 20 years |  |  |  |
Environmental loss contingencies, remediation period |  |  |  | 20 years |  |  |  |
Conditional asset retirement obligations | $ |  |  |  | $ 17 | $ 17 |  |  |
FTC-Related Remediation and Litigation |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss contingency, number of subsidiaries in civil enforcement action | subsidiary |  |  |  |  |  |  | 2 |
Loss contingency, pending claims, number |  |  |  |  |  | 6 |  |
Aqueous Film Forming Foam ("AFFF") Litigation |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss contingency, number of subsidiaries named in lawsuits | subsidiary |  |  |  |  | 2 |  |  |
AFFF Putative Class Actions |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss contingency, pending claims, number |  |  |  |  | 39 |  |  |
Loss contingency, pending claims, number of states originated from | state |  |  |  |  | 15 |  |  |
AFFF Individual or Mass Actions |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss contingency, pending claims, number |  |  |  |  | 3,900 |  |  |
Loss contingency, pending claims, number of states originated from | state |  |  |  |  | 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 |  |  |  |  | 3,900 |  |  |
AFFF Municipal and Water Provider Cases |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss contingency, pending claims, number |  |  |  |  | 350 |  |  |
Loss contingency, pending claims, number of states originated from | state |  |  |  |  | 30 |  |  |
State or U.S. Territory Attorneys General Litigation Related to AFFF | Michigan |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss contingency, pending claims, number |  |  |  |  |  |  |  | 2
State or U.S. Territory Attorneys General Litigation Related to AFFF | Alaska |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss contingency, pending claims, number |  |  | 2 |  |  |  |  |
Loss contingency, number of pending claims transferred to MDL |  |  | 2 |  |  |  |  |
State or U.S. Territory Attorneys General Litigation Related to AFFF | North Carolina |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss contingency, pending claims, number | 2 | 4 |  |  |  |  |  |
Loss contingency, number of pending claims transferred to MDL | 2 | 4 |  |  |  |  |  |

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