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Segment Information - Depreciation by Segment (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Segment Reporting Information [Line Items]        
Total depreciation $ 18 $ 17 $ 53 $ 51
ASC        
Segment Reporting Information [Line Items]        
Total depreciation 12 12 36 36
IMS        
Segment Reporting Information [Line Items]        
Total depreciation $ 6 $ 5 $ 17 $ 15