Fair Value Measurements and Derivative Instruments - Interest Rate Risk (Details)	1 Months Ended		3 Months Ended
	Mar. 31, 2018 USD ($)		Mar. 31, 2018 USD ($)
Interest Rate Cash Flow Hedges [Abstract]
Debt Floating Rate	1.32%
Interest rate swaps | Fair Value Hedging
Interest Rate Fair Value Hedges [Abstract]
Long-term debt	$ 790,000,000		$ 790,000,000
Interest rate swaps | Fair Value Hedging | Oasis of the Seas term loan
Interest Rate Fair Value Hedges [Abstract]
Long-term debt	$ 140,000,000		$ 140,000,000
Debt Fixed Rate	5.41%		5.41%
Interest rate swaps | Fair Value Hedging | Unsecured senior notes
Interest Rate Fair Value Hedges [Abstract]
Unsecured term loan	$ 650,000,000		$ 650,000,000
Debt Fixed Rate	5.25%		5.25%
Interest rate swaps | Cash flow hedge
Interest Rate Cash Flow Hedges [Abstract]
Swap notional amount	$ 2,979,582,000		$ 2,979,582,000
Interest rate swaps | Cash flow hedge | Celebrity Reflection term loan
Interest Rate Cash Flow Hedges [Abstract]
Swap notional amount	$ 381,792,000		$ 381,792,000
All-in Swap Fixed Rate	2.85%		2.85%
Interest rate swaps | Cash flow hedge | Quantum of the Seas term loan
Interest Rate Cash Flow Hedges [Abstract]
Swap notional amount	$ 551,250,000		$ 551,250,000
All-in Swap Fixed Rate	3.74%		3.74%
Interest rate swaps | Cash flow hedge | Anthem of the Seas term loan
Interest Rate Cash Flow Hedges [Abstract]
Swap notional amount	$ 573,958,000		$ 573,958,000
All-in Swap Fixed Rate	3.86%		3.86%
Interest rate swaps | Cash flow hedge | Ovation of the Seas term loan
Interest Rate Cash Flow Hedges [Abstract]
Swap notional amount	$ 726,250,000		$ 726,250,000
All-in Swap Fixed Rate	3.16%		3.16%
Interest rate swaps | Cash flow hedge | Harmony of the Seas Unsecured Term Loan
Interest Rate Cash Flow Hedges [Abstract]
Swap notional amount	$ 746,332,000	[1]	$ 746,332,000	[1]
All-in Swap Fixed Rate	2.26%	[1]	2.26%	[1]
LIBOR | Interest rate swaps | Fair Value Hedging | Oasis of the Seas term loan
Interest Rate Fair Value Hedges [Abstract]
Swap Floating Rate: LIBOR plus	3.87%		3.87%
All-in swap floating rate	5.44%		5.44%
LIBOR | Interest rate swaps | Fair Value Hedging | Unsecured senior notes
Interest Rate Fair Value Hedges [Abstract]
Swap Floating Rate: LIBOR plus	3.63%		3.63%
All-in swap floating rate	5.47%		5.47%
LIBOR | Interest rate swaps | Cash flow hedge | Celebrity Reflection term loan
Interest Rate Cash Flow Hedges [Abstract]
Debt Floating Rate			0.40%
LIBOR | Interest rate swaps | Cash flow hedge | Quantum of the Seas term loan
Interest Rate Cash Flow Hedges [Abstract]
Debt Floating Rate			1.30%
LIBOR | Interest rate swaps | Cash flow hedge | Anthem of the Seas term loan
Interest Rate Cash Flow Hedges [Abstract]
Debt Floating Rate			1.30%
LIBOR | Interest rate swaps | Cash flow hedge | Ovation of the Seas term loan
Interest Rate Cash Flow Hedges [Abstract]
Debt Floating Rate			1.00%
EURIBOR | Interest rate swaps | Cash flow hedge | Harmony of the Seas Unsecured 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, 2018.