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Long-Term Debt and Finance Lease Obligations - Petroleum Segment (Details) - USD ($) $ in Millions			3 Months Ended		9 Months Ended
	Jul. 25, 2025	Jun. 30, 2025	Sep. 30, 2025	Jun. 30, 2025	Sep. 30, 2025	Sep. 30, 2024
Line of Credit Facility [Line Items]
Repayments of senior debt					$ 0	$ 600
Term Loan | Petroleum Segment
Line of Credit Facility [Line Items]
Repayments of senior debt	$ 20	$ 70
Loss on extinguishment of debt			$ 1	$ 1

X

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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- Definition

The cash outflow for a long-term debt where the holder has highest claim on the entity's asset in case of bankruptcy or liquidation during the period.

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