Fair Value Measurements and Derivative Instruments - Pullmantur Goodwill, Intangible Assets, and Long-lived Assets (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Asset Impairment Charges [Abstract]
Long-lived assets—Pullmantur aircraft and vessels, Total Impairment				$ 113,200
Total, Total Impairment		$ 411,267	$ 0	411,267	$ 0
Fair Value, Measurements, Nonrecurring | Level 3
Assets and liabilities measured on a recurring basis
Total Assets		0		0		$ 0
Total Carrying Amount | Fair Value, Measurements, Nonrecurring
Assets and liabilities measured on a recurring basis
Total Assets		147,419		147,419		189,241
Total Fair Value | Fair Value, Measurements, Nonrecurring
Assets and liabilities measured on a recurring basis
Total Assets		147,419		147,419		$ 189,241
Pullmantur
Asset Impairment Charges [Abstract]
Pullmantur Goodwill, Total Impairment	[1]			123,814
Indefinite-life intangible asset—Pullmantur trademarks and trade names, Total Impairment	[2]			174,285
Long-lived assets—Pullmantur aircraft and vessels, Total Impairment	[3]			113,168
Total, Total Impairment				$ 411,267
Pullmantur | Goodwill
Fair Value Inputs [Abstract]
Discount rate				11.00%
Pullmantur | Intangible Assets
Fair Value Inputs [Abstract]
Discount rate				11.50%
Pullmantur | Fair Value, Measurements, Nonrecurring | Level 3
Assets and liabilities measured on a recurring basis
Pullmantur Goodwill	[1]	0		$ 0
Indefinite-life intangible asset—Pullmantur trademarks and trade names	[2]	0		0
Long-lived assets—Pullmantur aircraft and vessels	[3]	147,900		147,900
Total Assets		147,900		147,900
Pullmantur | Total Carrying Amount | Fair Value, Measurements, Nonrecurring
Assets and liabilities measured on a recurring basis
Pullmantur Goodwill	[1]	0		0
Indefinite-life intangible asset—Pullmantur trademarks and trade names	[2]	0		0
Long-lived assets—Pullmantur aircraft and vessels	[3]	147,900		147,900
Total Assets		147,900		147,900
Pullmantur | Total Fair Value | Fair Value, Measurements, Nonrecurring
Assets and liabilities measured on a recurring basis
Pullmantur Goodwill	[1]	0		0
Indefinite-life intangible asset—Pullmantur trademarks and trade names	[2]	0		0
Long-lived assets—Pullmantur aircraft and vessels	[3]	147,900		147,900
Total Assets		$ 147,900		$ 147,900

[1] We estimated the fair value of the Pullmantur reporting unit using a probability-weighted discounted cash flow model. The principal assumptions used in the discounted cash flow model are projected operating results, weighted-average cost of capital and terminal value. Significantly impacting these assumptions was the decision to reduce the size of Pullmantur's fleet. The discounted cash flow model used our 2016 projected operating results as a base. To that base we added future years’ cash flows through 2020 assuming multiple revenue and expense scenarios that reflect the impact of different global economic environments for this period on Pullmantur’s reporting unit. We assigned a probability to each revenue and expense scenario. We discounted the projected cash flows using rates specific to Pullmantur’s reporting unit based on its weighted-average cost of capital, which was determined to be 11%. (2) We estimated the fair value of our indefinite-life intangible asse

[2] We estimated the fair value of our indefinite-life intangible asset using a discounted cash flow model and the relief-from-royalty method. These trademarks and trade names relate to Pullmantur and we have used a discount rate of 11.5%, comparable to the rate used in valuing the Pullmantur reporting unit.

[3] We estimated the fair value of our long-lived assets using the market approach for the aircraft and a blended indication from the cost and market approaches for the vessels. A significant input in performing the fair value assessments for these assets was comparable market transactions.