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Contingencies and Commitments (Tables)
12 Months Ended
Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Future Minimum Rental Payments for Operating Leases
The following represents the maturities of our outstanding lease commitments as of December 31, 2020:
(Millions) 
2021$141 
2022140 
2023133 
2024125 
2025107 
Thereafter1,024 
Total Outstanding Fixed Lease Payments$1,670 
Less: Amount representing interest$(566)
Lease Liabilities$1,104