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

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

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-Article 12

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Maximum length of time over which the entity is hedging its exposure.

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Represents the maximum borrowing which the company has arranged for each ship constructed.

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No definition available.

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Represents the maximum borrowing which the company has arranged for each ship constructed.

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- Definition

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

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No definition available.

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

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

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- Definition

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

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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

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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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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)	9 Months Ended		12 Months Ended
	Sep. 30, 2015 USD ($)	Sep. 30, 2015 EUR (€)	Dec. 31, 2014 USD ($)	Dec. 31, 2014 EUR (€)	Sep. 30, 2015 EUR (€)
Derivative Instruments
Fair Value, Concentration of Risk, Derivative Instruments, Assets	$ 700,000
Derivative instrument, observation period	3 years	3 years
Percentage of debt bearing fixed interest	33.00%		28.50%		33.00%
Interest rate swaps
Derivative Instruments
Notional amount	$ 4,400,000,000		$ 2,900,000,000
Interest rate swaps \| Fair Value Hedging \| Oasis of the Seas Unsecured Term Loan
Derivative Instruments
Unsecured term loan	420,000,000.0		420,000,000
Debt amount	$ 227,500,000
Interest rate on hedged debt (as a percent)	5.41%				5.41%
Interest rate swaps \| Fair Value Hedging \| 5.25% Fixed rate debt
Derivative Instruments
Unsecured term loan	$ 650,000,000.0		650,000,000
Interest rate on hedged debt (as a percent)	5.25%				5.25%
Interest rate swaps \| Cash flow hedge \| Harmony of the Seas Unsecured Term Loan
Derivative Instruments
Anticipated loan balance	$ 774,200,000.0				€ 693,400,000.0
Fixed rate on converted debt	2.26%				2.26%
Interest rate swaps \| Cash flow hedge \| Ovation of the Seas Unsecured Term Loan
Derivative Instruments
Anticipated loan balance	$ 830,000,000.0
Additional interest above LIBOR rate	1.00%	1.00%
Fixed rate on converted debt	3.16%				3.16%
Interest rate swaps \| Cash flow hedge \| Celebrity Reflection floating rate debt
Derivative Instruments
Unsecured term loan			$ 518,100,000.0
Additional interest above LIBOR rate	0.40%	0.40%	0.40%	0.40%
Fixed rate on converted debt	2.85%		2.85%		2.85%
Unsecured term loan, maximum borrowing commitment per ship	$ 518,100,000
Interest rate swaps \| Cash flow hedge \| Quantum of the Seas Unsecured Term Loan
Derivative Instruments
Unsecured term loan			$ 704,400,000.0
Additional interest above LIBOR rate	1.30%	1.30%	1.30%	1.30%
Fixed rate on converted debt	3.74%		3.74%		3.74%
Unsecured term loan, maximum borrowing commitment per ship	$ 704,400,000
Interest rate swaps \| Cash flow hedge \| Anthem of the Seas Unsecured Term Loan
Derivative Instruments
Additional interest above LIBOR rate	1.30%	1.30%
Fixed rate on converted debt	3.86%				3.86%
Unsecured term loan, maximum borrowing commitment per ship	$ 725,000,000
Foreign exchange contracts
Derivative Instruments
Notional amount	2,500,000,000		$ 3,000,000,000
Pullmantur and TUI Cruises \| Net Investment Hedging
Derivative Instruments
Debt amount	207,585,000		168,718,000
Carrying value of non-derivative instrument designated as hedging instrument	$ 207,600,000	€ 185,900,000	$ 168,700,000	€ 139,400,000
LIBOR \| Anthem of the Seas Unsecured Term Loan
Derivative Instruments
Additional interest above LIBOR rate	1.30%	1.30%
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%				3.87%
Derivative, Variable rate of interest (as a percent)	4.28%				4.28%
LIBOR \| Interest rate swaps \| Fair Value Hedging \| 5.25% Fixed rate debt
Derivative Instruments
Additional interest above LIBOR rate (as a percent)	3.63%				3.63%
Derivative, Variable rate of interest (as a percent)	3.95%				3.95%
EURIBOR \| Interest rate swaps \| Cash flow hedge \| Harmony of the Seas Unsecured Term Loan
Derivative Instruments
Additional interest above LIBOR rate	1.15%	1.15%