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Investments and Variable Interest Entities - Narrative (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Schedule of Equity Method Investments [Line Items]      
Unrealized gains (losses) recognized $ (30) $ (70)  
Cash distribution received from equity method investments 27 32  
Other investments 184   $ 184
Total carrying value of debt 99,100   99,100
Consolidated variable interest entity's assets included in condensed consolidated balance sheet 267,770   266,211
Short-Term Instruments      
Schedule of Equity Method Investments [Line Items]      
Other investments 0   0
Other Investments      
Schedule of Equity Method Investments [Line Items]      
Proceeds from short-term instruments $ 0 255  
Purchase of short-term instruments   257  
Variable Interest Entity, Primary Beneficiary | Universal Beijing Resort      
Schedule of Equity Method Investments [Line Items]      
Ownership percentage in variable interest entity 30.00%    
Total carrying value of debt $ 3,500   3,400
Consolidated variable interest entity's assets included in condensed consolidated balance sheet 7,300   7,300
Consolidated variable interest entity's liabilities included in condensed consolidated balance sheet 7,000   7,000
Variable Interest Entity, Primary Beneficiary | Universal Beijing Resort | Universal Beijing Resort Term Loans      
Schedule of Equity Method Investments [Line Items]      
Total carrying value of debt 3,100   3,000
Atairos      
Schedule of Equity Method Investments [Line Items]      
Cash capital contributions for equity method investments 13 $ 13  
Equity method investments and certain retained distributions 4,900   $ 5,100
Atairos | Variable Interest Entity, Not Primary Beneficiary      
Schedule of Equity Method Investments [Line Items]      
Remaining unfunded capital commitment $ 1,400