Annual report pursuant to Section 13 and 15(d)

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

v3.3.1.900
Long-Term Debt - Summary of Long-term debt (Parentheticals) (Details)
€ in Millions, $ in Millions
 1 Months Ended 12 Months Ended
Nov. 30, 2015
Dec. 31, 2015
USD ($)
Dec. 31, 2015
EUR (€)
Dec. 31, 2014
USD ($)
Debt Instrument [Line Items]        
Debt, principal amount | $   $ 1.1    
Interest rate   5.00%    
4.625% senior unsecured notes        
Debt Instrument [Line Items]        
Debt, principal amount | $   $ 600.0    
Interest rate   4.625%    
Norwegian Epic Term Loan        
Debt Instrument [Line Items]        
Debt, principal amount | €     € 662.9  
Senior Secured Revolving Credit Facility        
Debt Instrument [Line Items]        
Debt, principal amount | $   $ 625.0    
Senior secured term loan facility        
Debt Instrument [Line Items]        
Debt, principal amount | $   350.0    
Term Loan Facilities        
Debt Instrument [Line Items]        
Debt, principal amount | $   1,375.0    
Pride of Hawai'i Loan        
Debt Instrument [Line Items]        
Debt, principal amount | €     308.1  
5.00% Senior Unsecured Notes        
Debt Instrument [Line Items]        
Debt, principal amount | $   $ 300.0    
Net unamortized original issue discount | $       $ 1.1
Interest rate 5.00% 5.00%    
Norwegian Jewel Term Loan        
Debt Instrument [Line Items]        
Debt, principal amount | $   $ 334.1    
Pride Of America Hermes Loan        
Debt Instrument [Line Items]        
Debt, principal amount | €     258.0  
Breakaway One Loan        
Debt Instrument [Line Items]        
Debt, principal amount | €     529.8  
Breakaway Two Loan        
Debt Instrument [Line Items]        
Debt, principal amount | €     529.8  
Breakaway Three Loan        
Debt Instrument [Line Items]        
Debt, principal amount | €     590.5  
Breakaway Four Loan        
Debt Instrument [Line Items]        
Debt, principal amount | €     590.5  
Norwegian Jewel Term Loan One        
Debt Instrument [Line Items]        
Debt, principal amount | €     126.0  
Norwegian Jade Term Loan        
Debt Instrument [Line Items]        
Debt, principal amount | €     126.0  
Seahawk 1 term loan        
Debt Instrument [Line Items]        
Debt, principal amount | €     666.0  
Seahawk 2 term loan        
Debt Instrument [Line Items]        
Debt, principal amount | €     € 666.0  
5.25% senior unsecured notes        
Debt Instrument [Line Items]        
Debt, principal amount | $   $ 680.0    
Interest rate   5.25%    
Marina newbuild loan        
Debt Instrument [Line Items]        
Net unamortized premium | $   $ 0.3   0.4
Riviera newbuild loan        
Debt Instrument [Line Items]        
Net unamortized premium | $   $ 0.4   $ 0.5