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Supplemental Cash Flow Information - Schedule of Cash Flows Related to Income Taxes, Interest, Leases, Capital Expenditures, and Deferred Financing Costs Included in Accounts Payable, and Non-Cash Dividends (Details) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Supplemental disclosures:    
Cash (received, net of payments) paid, net of refunds for income taxes $ (1) $ 60
Cash paid for interest 73 55
Cash paid for amounts included in the measurement of lease liabilities:    
Operating cash flows from operating leases 11 9
Operating cash flows from finance leases 3 2
Financing cash flows from finance leases 4 3
Noncash investing and financing activities:    
Change in capital expenditures included in accounts payable 0 2
Change in turnaround expenditures included in accounts payable (1) (2)
ROU assets obtained in exchange for new or modified operating lease liabilities 3 12
ROU assets obtained in exchange for new or modified finance lease liabilities $ 14 $ 0