v3.24.2.u1
Fair Value Measurements - Assets measured at fair value on a non-recurring basis and related impairment charges (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Other investments [1] $ 9,957   $ 9,957   $ 10,257
Impairment Charges     48 $ 0  
Non-Recurring Basis          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Other investments 109   109   80
Total 109   109   80
Impairment Charges 21 $ 0 46 0  
Non-Recurring Basis | Other investments          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Impairment Charges 21 $ 0 46 $ 0  
Non-Recurring Basis | Level 1          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Other investments 0   0   0
Total 0   0   0
Non-Recurring Basis | Level 2          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Other investments 0   0   0
Total 0   0   0
Non-Recurring Basis | Level 3          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Other investments 109   109   80
Total $ 109   $ 109   $ 80
[1] See Note 8 for details of balances associated with variable interest entities