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Investments - Equity Method Investment in Adevinta - Narrative (Details) - USD ($)
shares in Millions, $ in Millions
 3 Months Ended 6 Months Ended
May 29, 2024
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2021
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Schedule of Investments [Line Items]              
Total consideration from sale of equity securities         $ 2,417 $ 0  
Equity investment in Adevinta   $ 0     0   $ 4,474
Deferred tax liability   1,814     1,814   2,408
Income taxes payable   812     812   253
Total unrealized losses on equity investments held, end of period   (23) $ (245)   (263) (85)  
Adevinta              
Schedule of Investments [Line Items]              
Ownership percentage       44.00%      
Equity investment under fair value option       $ 10,800      
Ownership percentage after sale       33.00%      
Equity investment in Adevinta   0     0   $ 4,474
Realized gain on sale of equity securities   84 0   78 0  
Unrealized loss on equity securities         234    
Deferred tax liability   456     456    
Income taxes payable   458     458    
Total unrealized losses on equity investments held, end of period   0 $ (210)   (234) $ (36)  
Adevinta | Aurelia BidCo 1 Norway AS              
Schedule of Investments [Line Items]              
Number of voting shares sold 227            
Total consideration from sale of equity securities $ 2,400            
Ownership percentage after sale 18.30%            
Adevinta | Aurelia Netherlands TopCo B.V              
Schedule of Investments [Line Items]              
Number of voting shares sold 177            
Adevinta | Permira              
Schedule of Investments [Line Items]              
Number of voting shares sold       135      
Total consideration from sale of equity securities       $ 2,300      
Aurelia              
Schedule of Investments [Line Items]              
Equity securities without readily determinable fair value, amount   $ 1,900     $ 1,900