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Leases (Components of Net Investment in Finance Leases) (Details)
$ in Millions
Mar. 31, 2022
USD ($)
Leases [Abstract]  
2022 $ 19
2023 26
2024 27
2025 27
2026 26
2027 and Thereafter 335
Total minimum future lease receipts 460
Residual value of leased pipeline 17
Less unearned income 248
Net investment in finance lease 229
Less current portion 6
Net investment in finance lease, noncurrent $ 223