Annual report pursuant to Section 13 and 15(d)

Long-Term Debt (Detail Textuals)

v3.8.0.1
Long-Term Debt (Detail Textuals) - USD ($)
12 Months Ended
Oct. 10, 2017
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Debt Instrument [Line Items]        
Interest expense, net   $ 267,800,000 $ 276,900,000 $ 221,900,000
Amortization of deferred financing costs   32,500,000 34,700,000 36,700,000
Loss on extinguishment of debt   23,900,000 27,700,000 $ 12,700,000
Accrued interest liability   $ 31,900,000 32,500,000  
New Term Loan A Facility        
Debt Instrument [Line Items]        
Extended maturity year   2021    
4.625% senior unsecured notes        
Debt Instrument [Line Items]        
Debt, principal amount     $ 600,000,000  
Extended maturity year   2020    
Interest rate     4.625%  
NCLC | New Term Loan A Facility        
Debt Instrument [Line Items]        
Debt, principal amount $ 1,412,000,000      
NCLC | New Term Loan B Facility        
Debt Instrument [Line Items]        
Debt, principal amount $ 375,000,000      
Extended maturity year 2021      
NCLC | 4.625% senior unsecured notes        
Debt Instrument [Line Items]        
Extended maturity year 2020      
Interest rate 4.625%      
Redemption price including accrued and unpaid interest $ 1,044.41      
Outstanding principal amount of notes 1,000      
NCLC | Revolving Loan Facility        
Debt Instrument [Line Items]        
Aggregate amount of commitments $ 875,000,000   $ 750,000,000  
NCLC | Revolving Loan Facility | New Term Loan A Facility | Eurodollar        
Debt Instrument [Line Items]        
Description of variable rate basis Eurocurrency loans      
Initial applicable margin rate 1.75%      
NCLC | Revolving Loan Facility | New Term Loan A Facility | Eurodollar | Minimum        
Debt Instrument [Line Items]        
Description of variable rate basis Eurocurrency loans      
Initial applicable margin rate 1.25%      
NCLC | Revolving Loan Facility | New Term Loan A Facility | Eurodollar | Maximum        
Debt Instrument [Line Items]        
Description of variable rate basis Eurocurrency loans      
Initial applicable margin rate 2.00%      
NCLC | Revolving Loan Facility | New Term Loan A Facility | Base rate        
Debt Instrument [Line Items]        
Description of variable rate basis Base rate loans      
Initial applicable margin rate 0.75%      
NCLC | Revolving Loan Facility | New Term Loan A Facility | Base rate | Minimum        
Debt Instrument [Line Items]        
Description of variable rate basis Base rate loans      
Initial applicable margin rate 0.25%      
NCLC | Revolving Loan Facility | New Term Loan A Facility | Base rate | Maximum        
Debt Instrument [Line Items]        
Description of variable rate basis Base rate loans      
Initial applicable margin rate 1.00%      
NCLC | Revolving Loan Facility | New Term Loan B Facility | Eurodollar        
Debt Instrument [Line Items]        
Description of variable rate basis Eurocurrency loans      
Initial applicable margin rate 1.75%      
NCLC | Revolving Loan Facility | New Term Loan B Facility | Base rate        
Debt Instrument [Line Items]        
Description of variable rate basis Base rate loans      
Initial applicable margin rate 0.75%