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Fair Value Measurements - Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) - USD ($)
$ in Millions
Jun. 30, 2024
Dec. 31, 2023
Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Corporate notes $ 515 $ 499 $ 479
Derivatives 78 122 112
Derivatives (67) (58) (141)
Fair Value, Recurring      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Money market funds 2,101 1,514 1,797
Commercial paper 251 291 256
Corporate notes 247 183 195
U.S. and local government agencies 17 25 47
Other equity investments 57 44 10
Derivatives 78 122 112
Total assets 2,751 2,179 2,417
Derivatives (67) (58) (141)
Other (17)    
Total liabilities (84) (58) (141)
Fair Value, Recurring | Level 1      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Money market funds 2,101 1,514 1,797
Other equity investments 57 44 10
Total assets 2,158 1,558 1,807
Fair Value, Recurring | Level 2      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Commercial paper 251 291 256
Corporate notes 247 183 195
U.S. and local government agencies 17 25 47
Derivatives 78 122 112
Total assets 593 621 610
Derivatives (67) (58) (141)
Other (17)    
Total liabilities $ (84) $ (58) $ (141)