Annual report pursuant to Section 13 and 15(d)

Long-Term Debt - Summary of Long-term debt (Details)

v3.8.0.1
Long-Term Debt - Summary of Long-term debt (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Debt Instrument [Line Items]    
Total debt $ 6,307,765 $ 6,398,687
Less: current portion of long-term debt (619,373) (560,193)
Total long-term debt $ 5,688,392 $ 5,838,494
$875.0 million senior secured revolving credit facility    
Debt Instrument [Line Items]    
Interest Rate 3.27% 0.00%
Extended maturity year 2021  
Total debt $ 78,000 $ 0
$750.0 million senior secured revolving credit facility    
Debt Instrument [Line Items]    
Interest Rate 0.00% 2.70%
Extended maturity year 2021  
Total debt $ 0 $ 129,000
Term Loan A    
Debt Instrument [Line Items]    
Interest Rate 3.32% 0.00%
Extended maturity year 2021  
Total debt $ 1,385,196 $ 0
$1,506.6 million term loan A facility    
Debt Instrument [Line Items]    
Interest Rate 0.00% 2.77%
Extended maturity year 2021  
Total debt $ 0 $ 1,459,033
$375.0 million Term Loan B    
Debt Instrument [Line Items]    
Interest Rate [1] 3.18% 0.00%
Extended maturity year [1] 2021  
Total debt [1] $ 371,914 $ 0
$700.0 million 4.750% senior unsecured notes    
Debt Instrument [Line Items]    
Interest Rate 4.75% 4.75%
Extended maturity year 2021  
Total debt $ 693,413 $ 691,767
$600.0 million 4.625% senior unsecured notes    
Debt Instrument [Line Items]    
Interest Rate 0.00% 4.63%
Extended maturity year 2020  
Total debt $ 0 $ 592,031
Norwegian Epic term loan    
Debt Instrument [Line Items]    
Interest Rate [2] 3.44% 3.00%
Extended maturity year [2] 2022  
Total debt [2] $ 328,646 $ 395,830
Pride of Hawaii Loan    
Debt Instrument [Line Items]    
Interest Rate [2] 2.31% 1.83%
Extended maturity year [2] 2018  
Total debt [2] $ 18,438 $ 54,601
Norwegian Jewel term loan    
Debt Instrument [Line Items]    
Interest Rate 0.00% 1.83%
Extended maturity year 2017  
Total debt $ 0 $ 26,919
Pride of America Hermes Loan    
Debt Instrument [Line Items]    
Interest Rate [2] 0.00% 1.90%
Extended maturity year [2] 2017  
Total debt [2] $ 0 $ 12,654
Breakaway one loan    
Debt Instrument [Line Items]    
Interest Rate [2] 2.97% 2.49%
Extended maturity year [2] 2025  
Total debt [2] $ 415,039 $ 469,100
Breakaway two loan    
Debt Instrument [Line Items]    
Interest Rate [2] 4.50% 4.50%
Extended maturity year [2] 2026  
Total debt [2] $ 482,133 $ 537,478
Breakaway three loan    
Debt Instrument [Line Items]    
Interest Rate [2] 2.98% 2.98%
Extended maturity year [2] 2018  
Total debt [2] $ 595,494 $ 653,474
Breakaway four loan    
Debt Instrument [Line Items]    
Interest Rate [2] 2.98% 2.98%
Extended maturity year [2] 2029  
Total debt [2] $ 758,595 $ 150,834
Norwegian Jewel term loan one    
Debt Instrument [Line Items]    
Interest Rate [2] 0.00% 1.82%
Extended maturity year [2] 2017  
Total debt [2] $ 0 $ 7,260
Norwegian Jade term loan    
Debt Instrument [Line Items]    
Interest Rate [2] 0.00% 1.82%
Extended maturity year [2] 2017  
Total debt [2] $ 0 $ 7,531
Seahawk 1 term loan    
Debt Instrument [Line Items]    
Interest Rate [2] 3.92% 3.92%
Extended maturity year [2] 2030  
Total debt [2] $ 184,837 $ 137,514
Seahawk 2 term loan    
Debt Instrument [Line Items]    
Interest Rate [2] 3.92% 3.92%
Extended maturity year [2] 2031  
Total debt [2] $ 90,351 $ 42,083
Sirena loan    
Debt Instrument [Line Items]    
Interest Rate 2.75% 2.75%
Extended maturity year 2019  
Total debt $ 27,344 $ 40,465
Explorer newbuild loan    
Debt Instrument [Line Items]    
Interest Rate 3.43% 3.43%
Extended maturity year 2028  
Total debt $ 295,093 $ 320,821
Marina newbuild loan    
Debt Instrument [Line Items]    
Interest Rate [3] 2.00% 1.54%
Extended maturity year [3] 2023  
Total debt [3] $ 245,706 $ 290,416
Riviera newbuild loan    
Debt Instrument [Line Items]    
Interest Rate [4] 2.11% 1.81%
Extended maturity year [4] 2024  
Total debt [4] $ 292,183 $ 337,174
Capital lease obligations    
Debt Instrument [Line Items]    
Extended maturity year 2028  
Total debt $ 45,383 $ 42,702
[1] Includes original issue discount of $0.9 million as of December 31, 2017.
[2] Currently U.S. dollar-denominated.
[3] Includes premium of $0.2 million as of December 31, 2017 and 2016.
[4] Includes premium of $0.2 million and $0.3 million as of December 31, 2017 and 2016, respectively.