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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