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Commitments and Contingencies (Tables)
9 Months Ended
Sep. 30, 2025
Excluding Line 901 Incident  
Loss Contingencies [Line Items]  
Schedule of Environmental Loss Contingencies
Our estimated undiscounted reserves for environmental liabilities (excluding liabilities related to the Line 901 incident, as discussed further below) were reflected on our Condensed Consolidated Balance Sheets as follows (in millions):

September 30,
2025
December 31,
2024
Other current liabilities$15 $11 
Other long-term liabilities and deferred credits73 69 
Total$88 $80