Fair Value Measurements and Derivative Instruments - Interest Rate Risk (Details) - Interest rate swaps	3 Months Ended
	Mar. 31, 2021 USD ($)
Fair Value Hedging
Interest Rate Fair Value Hedges [Abstract]
Long-term debt	$ 685,000,000
Fair Value Hedging | Oasis of the Seas term loan
Interest Rate Fair Value Hedges [Abstract]
Long-term debt	$ 35,000,000
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	$ 2,658,203,000
Cash flow hedge | Celebrity Reflection term loan
Interest Rate Cash Flow Hedges [Abstract]
Swap notional amount	$ 218,167,000
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	$ 367,500,000
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	$ 392,708,000
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	$ 518,750,000
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	$ 509,411,000	[1]
All-in Swap Fixed Rate	2.26%	[1],[2]
Cash flow hedge | Odyssey of the Seas term loan
Interest Rate Cash Flow Hedges [Abstract]
Swap notional amount	$ 460,000,000	[3]
All-in Swap Fixed Rate	3.21%	[3]
Cash flow hedge | Odyssey of the Seas term loan
Interest Rate Cash Flow Hedges [Abstract]
Swap notional amount	$ 191,667,000	[3],[4]
All-in Swap Fixed Rate	2.84%	[3]
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	4.12%
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	3.83%
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	0.95%	[3]
LIBOR | Cash flow hedge | Odyssey of the Seas term loan
Interest Rate Cash Flow Hedges [Abstract]
Debt Floating Rate	0.95%	[3]
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 March 31, 2021.

[2] Inputs other than quoted prices included within Level 1 that are observable for the liability, either directly or indirectly. For unsecured revolving credit facilities and unsecured term loans, fair value is determined utilizing the income valuation approach. This valuation model takes into account the contract terms of our debt such as the debt maturity and the interest rate on the debt. The valuation model also takes into account the creditworthiness of the Company.

[3] 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 $460.0 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.

[4] Consists of foreign currency forward contracts, interest rate swaps and fuel swaps. Refer to the "Fair Value of Derivative Instruments" table for breakdown by instrument type.