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Leases (Supplemental Balance Sheet Information Related To Leases) (Details) - USD ($)
$ in Millions
Jun. 30, 2022
Dec. 31, 2021
Leases [Abstract]    
Operating lease right-of-use assets $ 525 $ 461
Operating lease liabilities 528 464
Finance Leases, Property and equipment, at cost 79 68
Finance Leases, Accumulated depreciation (21) (14)
Finance Leases, Property and equipment, net 58 54
Loans payable and other financial liabilities $ 49 $ 46