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Fair Value Measurements - Fair Value of Assets and Liabilities Measured at Fair Value (Details) - Fair Value, Recurring - USD ($)
$ in Millions
Jun. 30, 2024
Dec. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents $ 658 $ 609
Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 658 609
Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 0 0
Level 3    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents $ 0 $ 0