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Revenue Recognition - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Capitalized contract cost        
Amortization of contract cost assets $ 26 $ 25 $ 51 $ 50