Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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The percentage points added to the reference rate to compute the variable rate on the interest rate derivative.

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Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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Fixed interest rate related to the interest rate derivative.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Variable interest rate in effect as of the balance sheet date related to the interest rate derivative.

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This item represents disclosure of all significant concentrations of credit risk or market risk arising from the subject financial instrument (as defined), whether from an individual counterparty or groups of counterparties.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.

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Nominal or face amount used to calculate payments on a nonderivative instrument.

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Fair Value Measurements and Derivative Instruments - Non-Derivative Instruments (Details) € in Millions	6 Months Ended		12 Months Ended
	Jun. 30, 2016 USD ($)	Jun. 30, 2016 EUR (€)	Dec. 31, 2015 USD ($)	May 31, 2016	Apr. 30, 2016	Dec. 31, 2015 EUR (€)
Derivative Instruments
Liability Derivatives	$ 614,150,000		$ 1,044,292,000
Fair Value, Concentration of Risk, Derivative Instruments, Assets			$ 4,800,000
Derivative instrument, observation period	3 years	3 years
Percentage of debt bearing fixed interest	40.00%		31.00%			31.00%
Percentage of aggregate cost exposed to fluctuations in the euro exchange rate			58.00%			58.00%
Net Investment Hedging
Derivative Instruments
Notional Amount of Nonderivative Instruments	$ 289,857,000		$ 0
Interest rate swaps
Derivative Instruments
Notional amount	4,200,000,000		4,300,000,000
Interest rate swaps \| Harmony of the Seas Unsecured Term Loan
Derivative Instruments
Derivative, Fixed Interest Rate				2.26%
Interest rate swaps \| Ovation of the Seas Unsecured Term Loan
Derivative Instruments
Derivative, Fixed Interest Rate					3.16%
Interest rate swaps \| Fair Value Hedging
Derivative Instruments
Debt amount	842,500,000
Interest rate swaps \| Fair Value Hedging \| Oasis of the Seas Unsecured Term Loan
Derivative Instruments
Unsecured term loan			420,000,000
Debt amount	$ 192,500,000
Interest rate on hedged debt (as a percent)	5.41%
Interest rate swaps \| Fair Value Hedging \| Fixed Rate 5.25 Percent Debt
Derivative Instruments
Unsecured term loan	$ 650,000,000		650,000,000
Interest rate on hedged debt (as a percent)	5.25%
Interest rate swaps \| Cash flow hedge
Derivative Instruments
Unsecured term loan, maximum borrowing commitment per ship	$ 3,372,026,000
Interest rate swaps \| Cash flow hedge \| Harmony of the Seas Unsecured Term Loan
Derivative Instruments
Unsecured term loan			790,100,000			€ 693.4
Unsecured term loan, maximum borrowing commitment per ship	$ 770,714,000
Derivative, Fixed Interest Rate	2.26%
Interest rate swaps \| Cash flow hedge \| Ovation of the Seas Unsecured Term Loan
Derivative Instruments
Unsecured term loan			830,000,000.0
Unsecured term loan, maximum borrowing commitment per ship	$ 830,000,000
Derivative, Fixed Interest Rate	3.16%
Interest rate swaps \| Cash flow hedge \| Celebrity Reflection floating rate debt
Derivative Instruments
Unsecured term loan			490,900,000.0
Unsecured term loan, maximum borrowing commitment per ship	$ 463,604,000
Derivative, Fixed Interest Rate	2.85%
Interest rate swaps \| Cash flow hedge \| Quantum of the Seas Unsecured Term Loan
Derivative Instruments
Unsecured term loan			673,800,000
Unsecured term loan, maximum borrowing commitment per ship	$ 643,125,000
Derivative, Fixed Interest Rate	3.74%
Interest rate swaps \| Cash flow hedge \| Anthem of the Seas Unsecured Term Loan
Derivative Instruments
Unsecured term loan			694,800,000
Unsecured term loan, maximum borrowing commitment per ship	$ 664,583,000
Derivative, Fixed Interest Rate	3.86%
Foreign exchange contracts
Derivative Instruments
Notional amount	$ 1,000,000,000		2,400,000,000
LIBOR \| Ovation of the Seas Unsecured Term Loan
Derivative Instruments
Debt Instrument, Basis Spread on Variable Rate	1.00%	1.00%
LIBOR \| Interest rate swaps \| Fair Value Hedging \| Oasis of the Seas Unsecured Term Loan
Derivative Instruments
Additional interest above LIBOR rate (as a percent)	3.87%
Derivative, Variable rate of interest (as a percent)	4.78%
LIBOR \| Interest rate swaps \| Fair Value Hedging \| Fixed Rate 5.25 Percent Debt
Derivative Instruments
Additional interest above LIBOR rate (as a percent)	3.63%
Derivative, Variable rate of interest (as a percent)	4.26%
LIBOR \| Interest rate swaps \| Cash flow hedge \| Ovation of the Seas Unsecured Term Loan
Derivative Instruments
Debt Instrument, Basis Spread on Variable Rate	1.00%	1.00%
LIBOR \| Interest rate swaps \| Cash flow hedge \| Celebrity Reflection floating rate debt
Derivative Instruments
Debt Instrument, Basis Spread on Variable Rate	0.40%	0.40%
LIBOR \| Interest rate swaps \| Cash flow hedge \| Quantum of the Seas Unsecured Term Loan
Derivative Instruments
Debt Instrument, Basis Spread on Variable Rate	1.30%	1.30%
LIBOR \| Interest rate swaps \| Cash flow hedge \| Anthem of the Seas Unsecured Term Loan
Derivative Instruments
Debt Instrument, Basis Spread on Variable Rate	1.30%	1.30%
EURIBOR \| Interest rate swaps \| Cash flow hedge \| Harmony of the Seas Unsecured Term Loan
Derivative Instruments
Debt Instrument, Basis Spread on Variable Rate	1.15%	1.15%
Long Term Debt Current [Member] \| Net Investment Hedging
Derivative Instruments
Notional Amount of Nonderivative Instruments	$ 32,450,000		0
Long-term Debt [Member] \| Net Investment Hedging
Derivative Instruments
Notional Amount of Nonderivative Instruments	257,407,000		$ 0
TUI Cruises \| Net Investment Hedging
Derivative Instruments
Notional Amount of Nonderivative Instruments	$ 289,900,000	€ 260.8