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Derivative Financial Instruments - Reclassification Out of Accumulated Other Comprehensive Income (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Costs and expenses              
Derivative [Line Items]              
Other comprehensive income (loss), cash flow hedge, gain (loss), reclassification, before tax $ (12) $ 10 $ (12) $ 27 $ 31 $ 31 $ (18)
General and administrative expense              
Derivative [Line Items]              
Other comprehensive income (loss), cash flow hedge, gain (loss), reclassification, before tax 1 3 3 5 7 10 5
Revenues              
Derivative [Line Items]              
Other comprehensive income (loss), cash flow hedge, gain (loss), reclassification, before tax           1  
Costs and expenses              
Derivative [Line Items]              
Other comprehensive income (loss), cash flow hedge, gain (loss), reclassification, before tax (5) (4) (12) (6) (15) 7 13
General and administrative expense              
Derivative [Line Items]              
Other comprehensive income (loss), cash flow hedge, gain (loss), reclassification, before tax $ (9) $ (12) $ (13) $ (23) $ (17) $ (12) $ 8