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Details of Income Statement Items (Sales) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Details Of Income Statement [Abstract]      
Sales $ 6,955 $ 5,043 $ 5,271
Cost of sales      
Materials consumed 2,342 1,647 1,702
Cost of labor 906 794 766
Depreciation and amortization 413 416 384
Energy and fuel 343 316 340
Other 340 380 262
Cost of sales $ 4,344 $ 3,553 $ 3,454