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Investments - Other Equity Investments Under The Fair Value Option (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, 2021
Dec. 31, 2023
Dec. 31, 2022
Schedule of Investments [Line Items]              
Total unrealized losses on equity investments held, end of period $ (23) $ (245) $ (263) $ (85)      
Gmarket              
Schedule of Investments [Line Items]              
Ownership percentage after sale         19.99%    
Investment balance         $ 728    
Total unrealized losses on equity investments held, end of period (22) $ (29) (28) $ (40)      
Asset, fair value 307   307     $ 335 $ 431
Investments | Recurring              
Schedule of Investments [Line Items]              
Asset, fair value $ 47   $ 47     $ 47  
Discontinued Operations, Disposed of by Sale | eBay Korea              
Schedule of Investments [Line Items]              
Percentage of outstanding equity interests sold         80.01%