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Commitments and Contingent Liabilities, Operating Leases (Details) $ in Millions | Mar. 31, 2025 USD ($)
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Operating and finance Leases [Abstract] |  |
Operating lease ROU asset carrying value | $ 417 | [1]
Operating lease ROU asset, Consolidated Balance Sheet line item | Other Assets, Noncurrent |
Operating lease liability carrying value | $ 452 | [2]
Operating lease liability, current | $ 104 |
Lease liability, current, Consolidated Balance Sheet line item | Other Liabilities, Current |
Operating lease liability - non-current portion | $ 348 |
Lease liability, noncurrent, Consolidated Balance Sheet line item | Other Liabilities, Noncurrent |
Finance Lease, ROU Asset carrying value | $ 12 | [1]
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] | Other Assets, Noncurrent |
Finance Lease, Liability | $ 13 | [2]
Finance Lease, Liability, Current | $ 2 |
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] | Other Liabilities, Current |
Finance Lease, Liability, Noncurrent | $ 11 |
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] | Other Liabilities, Noncurrent |
Total Lease Right Of Use Asset | $ 429 |
Total Lease Liability | 465 |
Storage and Pipeline Facilities [Member] |  |
Operating and finance Leases [Abstract] |  |
Operating lease ROU asset carrying value | 209 | [1]
Operating lease liability carrying value | $ 208 | [2]
Operating lease weighted-average remaining term | 8 years |
Operating lease weighted-average discount rate | 4.50% | [3]
Transportation Equipment [Member] |  |
Operating and finance Leases [Abstract] |  |
Operating lease ROU asset carrying value | $ 40 | [1]
Operating lease liability carrying value | $ 41 | [2]
Operating lease weighted-average remaining term | 4 years |
Operating lease weighted-average discount rate | 4.80% | [3]
Finance Lease, ROU Asset carrying value | $ 12 | [1]
Finance Lease, Liability | $ 13 | [2]
Finance Lease, Weighted Average Remaining Lease Term | 4 years |
Finance Lease, Weighted Average Discount Rate, Percent | 4.80% | [3]
Office and Warehouse Space [Member] |  |
Operating and finance Leases [Abstract] |  |
Operating lease ROU asset carrying value | $ 168 | [1]
Operating lease liability carrying value | $ 203 | [2]
Operating lease weighted-average remaining term | 12 years |
Operating lease weighted-average discount rate | 3.40% | [3]
[1] | ROU asset amounts are a component of “Other assets” on our Unaudited Condensed Consolidated Balance Sheet.
[2] | At March 31, 2025, operating lease liabilities of $104 million and $348 million were included within “Other current liabilities” and “Other long-term liabilities,” respectively. Additionally at March 31, 2025, finance lease liabilities of $2 million and $11 million were included within "Other current liabilities" and "Other long-term liabilities," respectively.
[3] | The discount rate for each category of assets represents the weighted average of either (i) the implicit rate applicable to the underlying leases (where determinable) or (ii) our incremental borrowing rate adjusted for collateralization (if the implicit rate is not determinable). In general, the discount rates are based on either information available at the lease commencement date or January 1, 2019 for leases existing at the adoption date for ASC 842, Leases.

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