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Leases (Schedule of Right-of-use Assets and Lease Liabilities) (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Leases [Abstract]    
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Right-of-use assets Right-of-use assets
Right-of-use assets, finance lease $ 203 $ 211
Finance lease liabilities:    
Finance Lease, Liability, Current Other current liabilities Other current liabilities
Current lease liabilities, finance lease [1] $ 8 $ 8
Finance Lease, Liability, Noncurrent Long-term lease liabilities Long-term lease liabilities
Long-term lease liabilities, finance lease $ 249 $ 247
Total lease liabilities, finance lease $ 257 $ 255
Operating Lease, Right-of-Use Asset Right-of-use assets Right-of-use assets
Right-of-use assets, operating lease $ 21 $ 24
Operating lease liabilities:    
Operating Lease, Liability, Current Other current liabilities Other current liabilities
Current lease liabilities, operating lease [1] $ 13 $ 18
Operating Lease, Liability, Noncurrent Long-term lease liabilities Long-term lease liabilities
Long-term lease liabilities, operating lease $ 8 $ 5
Total lease liabilities, operating lease 21 23
Right-of-use assets 224 235
Lease liabilities:    
Current lease liabilities [1] 21 26
Long-term lease liabilities 257 252
Total lease liabilities $ 278 $ 278
[1] Current lease liabilities are included in other current liabilities on the consolidated balance sheets.