Investments and Variable Interest Entities - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Schedule of Equity Method Investments [Line Items]
Unrealized gains (losses) recognized	$ (11)	$ (30)
Cash distribution received from equity method investments	35	27
Total carrying value of debt	94,600		$ 98,900
Consolidated variable interest entity's assets included in condensed consolidated balance sheet	$ 260,002		272,631
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	$ 3,600		3,600
Consolidated variable interest entity's assets included in condensed consolidated balance sheet	7,600		7,400
Consolidated variable interest entity's liabilities included in condensed consolidated balance sheet	7,600		7,300
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	3,200
Atairos
Schedule of Equity Method Investments [Line Items]
Cash capital contributions for equity method investments	116	$ 13
Equity method investments and certain retained distributions	4,500		$ 4,700
Atairos \| Variable Interest Entity, Not Primary Beneficiary
Schedule of Equity Method Investments [Line Items]
Remaining unfunded capital commitment	$ 1,200

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