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OTHER FINANCIAL INFORMATION - Depreciation Expense (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Other Financial Information [Abstract]        
Depreciation expense $ 90 $ 94 $ 280 $ 286