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Commitments and Contingencies - Other Commitments and Contingencies (Details)
$ in Millions
 6 Months Ended 12 Months Ended
Jun. 30, 2024
USD ($)
location
Dec. 31, 2023
USD ($)
location
Loss Contingencies [Line Items]    
Environmental loss contingency, statement of financial position, extensible enumeration, not disclosed flag Consolidated Balance Sheets Consolidated Balance Sheets
Number of locations with one or more subsidiaries in conjunction with other parties identified as potentially responsible parties | location 8  
Employees covered by collective bargaining agreements, percentage 80.00%  
Other Environmental Claims    
Loss Contingencies [Line Items]    
Environmental matters liabilities | $ $ 58 $ 60
Current environmental liability | $ $ 15 $ 15
Known cleanup and remediation locations and projects | location 77 81
Number of sites - representative sample | location 20  
Liability associated with those sites | $ $ 47  
Environmental locations representative sample liability payout period, in years 5 years