Fair Value Measurements and Derivative Instruments (Intangible and Long-lived Assets) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2015	Dec. 31, 2014
Asset Impairment Charges [Abstract]
Total, Total Impairment		$ 411,267
Fair Value, Measurements, Nonrecurring | Level 3
Assets and liabilities measured on a recurring basis
Total Assets		0	$ 0
Total Carrying Amount | Fair Value, Measurements, Nonrecurring
Assets and liabilities measured on a recurring basis
Total Assets		121,565	189,241
Total Fair Value | Fair Value, Measurements, Nonrecurring
Assets and liabilities measured on a recurring basis
Total Assets		121,565	$ 189,241
Pullmantur
Asset Impairment Charges [Abstract]
Pullmantur Goodwill, Total Impairment		123,814
Indefinite-life intangible asset-Pullmantur trademarks and trade names, Total Impairment		174,285
Long-lived assets-Pullmantur aircraft and vessels, Total Impairment		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		0
Indefinite-life intangible assets-Pullmantur trademarks and trade names		0
Long-lived assets-Pullmantur aircraft and vessels		140,846
Total Assets		140,846
Pullmantur | Total Carrying Amount | Fair Value, Measurements, Nonrecurring
Assets and liabilities measured on a recurring basis
Pullmantur Goodwill		0
Indefinite-life intangible assets-Pullmantur trademarks and trade names		0
Long-lived assets-Pullmantur aircraft and vessels		140,846
Total Assets		140,846
Pullmantur | Total Fair Value | Fair Value, Measurements, Nonrecurring
Assets and liabilities measured on a recurring basis
Pullmantur Goodwill		0
Indefinite-life intangible assets-Pullmantur trademarks and trade names		0
Long-lived assets-Pullmantur aircraft and vessels		140,846
Total Assets		$ 140,846