Fair Value Measurements and Derivative Instruments - Interest Rate Risk (Details) - Interest rate swaps	6 Months Ended
	Jun. 30, 2021 USD ($)
Fair Value Hedging
Interest Rate Fair Value Hedges [Abstract]
Long-term debt	$ 667,500,000
Fair Value Hedging | Oasis of the Seas term loan
Interest Rate Fair Value Hedges [Abstract]
Long-term debt	$ 17,500,000
Debt Fixed Rate	5.41%
Fair Value Hedging | Unsecured senior notes
Interest Rate Fair Value Hedges [Abstract]
Long-term debt	$ 650,000,000
Debt Fixed Rate	5.25%
Cash flow hedge
Interest Rate Cash Flow Hedges [Abstract]
Swap notional amount	$ 2,486,493,000
Cash flow hedge | Celebrity Reflection term loan
Interest Rate Cash Flow Hedges [Abstract]
Swap notional amount	$ 190,896,000
All-in Swap Fixed Rate	2.85%
Cash flow hedge | Quantum of the Seas term loan
Interest Rate Cash Flow Hedges [Abstract]
Swap notional amount	$ 336,875,000
All-in Swap Fixed Rate	3.74%
Cash flow hedge | Anthem of the Seas term loan
Interest Rate Cash Flow Hedges [Abstract]
Swap notional amount	$ 362,500,000
All-in Swap Fixed Rate	3.86%
Cash flow hedge | Ovation of the Seas term loan
Interest Rate Cash Flow Hedges [Abstract]
Swap notional amount	$ 484,167,000
All-in Swap Fixed Rate	3.16%
Cash flow hedge | Harmony of the Seas term loan
Interest Rate Cash Flow Hedges [Abstract]
Swap notional amount	$ 479,555,000	[1]
All-in Swap Fixed Rate	2.26%	[1]
Cash flow hedge | Odyssey of the Seas term loan
Interest Rate Cash Flow Hedges [Abstract]
Swap notional amount	$ 440,833,000	[2]
All-in Swap Fixed Rate	3.21%	[2]
Cash flow hedge | Odyssey of the Seas term loan
Interest Rate Cash Flow Hedges [Abstract]
Swap notional amount	$ 191,667,000	[2]
All-in Swap Fixed Rate	2.84%	[2]
LIBOR | Fair Value Hedging | Oasis of the Seas term loan
Interest Rate Fair Value Hedges [Abstract]
Swap Floating Rate: LIBOR plus	3.87%
All-in swap floating rate	4.08%
LIBOR | Fair Value Hedging | Unsecured senior notes
Interest Rate Fair Value Hedges [Abstract]
Swap Floating Rate: LIBOR plus	3.63%
All-in swap floating rate	3.79%
LIBOR | Cash flow hedge | Celebrity Reflection term loan
Interest Rate Cash Flow Hedges [Abstract]
Debt Floating Rate	0.40%
LIBOR | Cash flow hedge | Quantum of the Seas term loan
Interest Rate Cash Flow Hedges [Abstract]
Debt Floating Rate	1.30%
LIBOR | Cash flow hedge | Anthem of the Seas term loan
Interest Rate Cash Flow Hedges [Abstract]
Debt Floating Rate	1.30%
LIBOR | Cash flow hedge | Ovation of the Seas term loan
Interest Rate Cash Flow Hedges [Abstract]
Debt Floating Rate	1.00%
LIBOR | Cash flow hedge | Odyssey of the Seas term loan
Interest Rate Cash Flow Hedges [Abstract]
Debt Floating Rate	0.96%	[2]
LIBOR | Cash flow hedge | Odyssey of the Seas term loan
Interest Rate Cash Flow Hedges [Abstract]
Debt Floating Rate	0.96%	[2]
EURIBOR | Cash flow hedge | Harmony of the Seas term loan
Interest Rate Cash Flow Hedges [Abstract]
Debt Floating Rate	1.15%	[1]

[1] Interest rate swap agreements hedging the Euro-denominated term loan for Harmony of the Seas include EURIBOR zero-floor matching the hedged debt EURIBOR zero-floor. Amount presented is based on the exchange rate as of June 30, 2021.

[2] Interest rate swap agreements hedging the term loan of Odyssey of the Seas include LIBOR zero-floors matching the debt LIBOR zero-floor. The effective dates of the $440.8 million and $191.7 million interest rate swap agreements are October 2020 and October 2022, respectively. The unsecured term loan for the financing of Odyssey of the Seas was drawn on March 2021.