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Leases (Schedule of Right-of-use Assets and Lease Liabilities) (Details) - USD ($)
$ in Millions
Sep. 30, 2023
Dec. 31, 2022
Leases [Abstract]    
Right-of-use assets, finance lease $ 249 $ 203
Finance lease liabilities:    
Current lease liabilities, finance lease [1] 21 8
Long-term lease liabilities, finance lease 287 249
Total lease liabilities, finance lease 308 257
Right-of-use assets, operating lease 12 21
Operating lease liabilities:    
Current lease liabilities, operating lease [1] 9 13
Long-term lease liabilities, operating lease 3 8
Total lease liabilities, operating lease 12 21
Right-of-use assets 261 224
Lease liabilities:    
Current lease liabilities [1] 30 21
Long-term lease liabilities 290 257
Total lease liabilities $ 320 $ 278
[1] Current lease liabilities are included in other current liabilities on the consolidated balance sheets.