Fair Value Measurements and Derivative Instruments - Schedule of Interest Rate Derivatives (Details) - Interest rate swaps - Cash Flow Hedge $ in Millions	6 Months Ended
	Jun. 30, 2026 USD ($)
Interest Rate Cash Flow Hedges [Abstract]
Notional amount	$ 735
Quantum of the Seas term loan
Interest Rate Cash Flow Hedges [Abstract]
Notional amount	$ 31
All-in Fixed Rate	3.78%
Quantum of the Seas term loan \| Term SOFR plus
Interest Rate Cash Flow Hedges [Abstract]
Debt Floating Rate	1.30%
Anthem of the Seas term loan
Interest Rate Cash Flow Hedges [Abstract]
Notional amount	$ 60
All-in Fixed Rate	3.90%
Anthem of the Seas term loan \| Term SOFR plus
Interest Rate Cash Flow Hedges [Abstract]
Debt Floating Rate	1.30%
Ovation of the Seas term loan
Interest Rate Cash Flow Hedges [Abstract]
Notional amount	$ 138
All-in Fixed Rate	3.20%
Ovation of the Seas term loan \| Term SOFR plus
Interest Rate Cash Flow Hedges [Abstract]
Debt Floating Rate	1.00%
Harmony of the Seas term loan
Interest Rate Cash Flow Hedges [Abstract]
Notional amount	$ 132
All-in Fixed Rate	2.26%
Harmony of the Seas term loan \| EURIBOR plus
Interest Rate Cash Flow Hedges [Abstract]
Debt Floating Rate	1.15%
Odyssey of the Seas term loan
Interest Rate Cash Flow Hedges [Abstract]
Notional amount	$ 249
All-in Fixed Rate	3.28%
Odyssey of the Seas term loan \| Term SOFR plus
Interest Rate Cash Flow Hedges [Abstract]
Debt Floating Rate	0.96%
Odyssey of the Seas term loan
Interest Rate Cash Flow Hedges [Abstract]
Notional amount	$ 125
All-in Fixed Rate	2.91%
Odyssey of the Seas term loan \| Term SOFR plus
Interest Rate Cash Flow Hedges [Abstract]
Debt Floating Rate	0.96%