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Investments and Variable Interest Entities - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Schedule of Equity Method Investments [Line Items]
Unrealized gains (losses) recognized	$ (16)	$ (7)	$ (27)	$ (30)
Cash distribution received from equity method investments			89	69
Total carrying value of debt	90,400		90,400		$ 98,900
Consolidated variable interest entity's assets included in condensed consolidated balance sheet	$ 257,548		$ 257,548		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%		30.00%
Total carrying value of debt	$ 3,700		$ 3,700		3,700
Consolidated variable interest entity's assets included in condensed consolidated balance sheet	7,600		7,600		7,400
Consolidated variable interest entity's liabilities included in condensed consolidated balance sheet	7,700		7,700		7,300
Variable Interest Entity, Primary Beneficiary \| Universal Beijing Resort Term Loans \| Universal Beijing Resort
Schedule of Equity Method Investments [Line Items]
Total carrying value of debt	3,300		3,300
Atairos
Schedule of Equity Method Investments [Line Items]
Cash capital contributions for equity method investments			267	$ 103
Equity method investments and certain retained distributions	5,000		5,000		$ 4,700
Atairos \| Variable Interest Entity, Not Primary Beneficiary
Schedule of Equity Method Investments [Line Items]
Remaining unfunded capital commitment	$ 1,100		$ 1,100