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Leases (Schedule of Right-of-use Assets and Lease Liabilities) (Details) - USD ($)
$ in Millions
Mar. 31, 2023
Dec. 31, 2022
Leases [Abstract]    
Right-of-use assets, finance lease $ 201 $ 203
Finance lease liabilities:    
Current lease liabilities, finance lease [1] 8 8
Long-term lease liabilities, finance lease 250 249
Total lease liabilities, finance lease 258 257
Right-of-use assets, operating lease 18 21
Operating lease liabilities:    
Current lease liabilities, operating lease [1] 12 13
Long-term lease liabilities, operating lease 6 8
Total lease liabilities, operating lease 18 21
Right-of-use assets 219 224
Lease liabilities:    
Current lease liabilities [1] 20 21
Long-term lease liabilities 256 257
Total lease liabilities $ 276 $ 278
[1] Current lease liabilities are included in other current liabilities on the consolidated balance sheets.