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Description of Business, Basis of Presentation and Significant Accounting Policies - Aggregate Amortization Expense for Internal-Use Software (Details) - Internal-use software amortization expense
$ in Millions
12 Months Ended
Dec. 31, 2024
USD ($)
Acquired Intangible Assets Amortization [Line Items]  
Actual 2024 $ 3
2025 2
2026 2
2027 2
2028 2
2029 $ 1