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Investments - Pre-tax Gains and Losses for Marketable Securities (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Schedule of Investments [Line Items]      
Gain on marketable securities sold during the period $ 593 $ 0 $ 0
Total gain on marketable securities 606 $ 0 $ 0
KDP      
Schedule of Investments [Line Items]      
Gain on marketable securities sold during the period 593    
Dividend income and other 13    
Total gain on marketable securities $ 606