v3.25.2
Commitments and Contingencies - Narrative (Details)
$ in Millions
1 Months Ended 3 Months Ended 9 Months Ended
Apr. 12, 2024
USD ($)
Oct. 31, 2022
claim
Nov. 30, 2021
claim
Apr. 30, 2021
claim
Jun. 30, 2025
USD ($)
claim
state
subsidiary
Jun. 30, 2024
USD ($)
Jun. 30, 2025
USD ($)
claim
state
subsidiary
defendant
Jun. 30, 2024
USD ($)
Mar. 31, 2025
USD ($)
Sep. 30, 2024
USD ($)
Nov. 30, 2022
claim
Mar. 31, 2022
subsidiary
Mar. 31, 2020
corporation
Loss Contingencies [Line Items]                          
Environmental loss contingencies payment period             20 years            
Conditional asset retirement obligations | $         $ 7   $ 7     $ 7      
Loss contingency, number of subsidiaries in civil enforcement action | subsidiary                       2  
Insurance receivables for asbestos-related liabilities | $         1 $ 351 13 $ 351          
Reserve for environmental liabilities, current | $         $ 23   $ 23     $ 32      
Loss contingency, number of tribal corporations | corporation                         2
FTC-Related Remediation and Litigation                          
Loss Contingencies [Line Items]                          
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   2            
AFFF Putative Class Actions                          
Loss Contingencies [Line Items]                          
Loss contingency, pending claims, number         45   45            
Loss contingency, proposed claims, number         6   6            
Loss contingency, pending claims, number of states originated from | state         20   20            
AFFF Individual or Mass Actions                          
Loss Contingencies [Line Items]                          
Loss contingency, pending claims, number         9,900   9,900            
Loss contingency, pending claims, number of states originated from | state         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             9,900            
AFFF Municipal and Water Provider Cases                          
Loss Contingencies [Line Items]                          
Loss contingency, pending claims, number         260   260            
Loss contingency, pending claims, number of states originated from | state         34   34            
Water Provider AFFF Settlement Agreement                          
Loss Contingencies [Line Items]                          
Contribution to resolve settlement | $ $ 750                        
Reserve for environmental liabilities, current | $                 $ 415        
State or U.S. Territory Attorneys General Litigation Related to AFFF                          
Loss Contingencies [Line Items]                          
Loss contingency, pending claims, number         35   35            
Loss contingency, pending claims, number of states originated from | state         33   33            
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