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SUPPLEMENTARY FINANCIAL STATEMENT INFORMATION - Plants, Property and Equipment, Net (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]          
Accumulated depreciation $ 3,600   $ 3,600   $ 3,500
Depreciation $ 32 $ 31 62 $ 62  
Non-cash additions     $ 6   $ 6