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Investments - Pre-tax Gains and Losses for Marketable Securities (Details) - KDP - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2023
Schedule of Investments [Line Items]    
(Loss)/gain on marketable securities sold during the period $ (104) $ 293
Unrealized (loss)/gain on marketable securities held as of the end of the period (90) 300
Dividend income and other 5 14
Total (loss)/gain on marketable securities $ (189) $ 607