|
Long-Term Debt (Parenthetical) (Detail)
In Millions, unless otherwise specified |
Feb. 28, 2013
|
Dec. 31, 2012
USD ($)
|
Dec. 31, 2011
USD ($)
|
Dec. 31, 2012
Norwegian Epic Term Loan
EUR (€)
|
Dec. 31, 2011
Norwegian Epic Term Loan
EUR (€)
|
Jun. 30, 2013
Norwegian Pearl and Norwegian Gem Revolving Credit Facility
EUR (€)
|
Dec. 31, 2012
Norwegian Pearl and Norwegian Gem Revolving Credit Facility
EUR (€)
|
Dec. 31, 2011
Norwegian Pearl and Norwegian Gem Revolving Credit Facility
EUR (€)
|
Dec. 31, 2012
11.75% Senior Secured Notes
USD ($)
|
Dec. 31, 2011
11.75% Senior Secured Notes
USD ($)
|
Jun. 30, 2013
Pride of Hawai'i Loan
EUR (€)
|
Dec. 31, 2012
Pride of Hawai'i Loan
EUR (€)
|
Dec. 31, 2011
Pride of Hawai'i Loan
EUR (€)
|
Jan. 31, 2013
9.50% Senior Unsecured Notes
|
Dec. 31, 2012
9.50% Senior Unsecured Notes
USD ($)
|
Dec. 31, 2011
9.50% Senior Unsecured Notes
USD ($)
|
Apr. 30, 2013
Norwegian Jewel Term Loan
EUR (€)
|
Jan. 31, 2013
Norwegian Jewel Term Loan
USD ($)
|
Dec. 31, 2012
Norwegian Jewel Term Loan
USD ($)
|
Dec. 31, 2011
Norwegian Jewel Term Loan
USD ($)
|
Jun. 30, 2013
Pride Of America Hermes Loan
EUR (€)
|
Dec. 31, 2012
Pride Of America Hermes Loan
EUR (€)
|
Dec. 31, 2011
Pride Of America Hermes Loan
EUR (€)
|
Dec. 31, 2012
Senior Secured Revolving Credit Facility
USD ($)
|
Dec. 31, 2011
Senior Secured Revolving Credit Facility
USD ($)
|
Apr. 30, 2013
Breakaway One Loan
EUR (€)
|
Dec. 31, 2012
Breakaway One Loan
EUR (€)
|
Dec. 31, 2011
Breakaway One Loan
EUR (€)
|
Dec. 31, 2012
Breakaway Two Loan
EUR (€)
|
Dec. 31, 2011
Breakaway Two Loan
EUR (€)
|
Dec. 31, 2012
Breakaway Three Loan
EUR (€)
|
Jun. 30, 2013
Pride of America Commercial Loan
EUR (€)
|
Dec. 31, 2012
Pride of America Commercial Loan
EUR (€)
|
Dec. 31, 2011
Pride of America Commercial Loan
EUR (€)
|
Dec. 31, 2012
Norwegian Jewel Term Loan One
EUR (€)
|
Dec. 31, 2011
Norwegian Jewel Term Loan One
EUR (€)
|
Apr. 30, 2013
Norwegian Jade Term Loan
EUR (€)
|
Dec. 31, 2012
Norwegian Jade Term Loan
EUR (€)
|
Dec. 31, 2011
Norwegian Jade Term Loan
EUR (€)
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Debt Instrument [Line Items] | |||||||||||||||||||||||||||||||||||||||
| Debt, principal amount | € 662.9 | € 662.9 | € 624.0 | € 624.0 | € 624.0 | $ 450.0 | $ 450.0 | € 308.1 | € 308.1 | € 308.1 | $ 350.0 | $ 350.0 | € 126.1 | $ 334.1 | $ 334.1 | $ 334.1 | € 258.0 | € 258.0 | € 258.0 | $ 750.0 | $ 750.0 | € 529.8 | € 529.8 | € 529.8 | € 529.8 | € 529.8 | € 590.5 | € 40.0 | € 40.0 | € 40.0 | € 126.0 | € 126.0 | € 126.1 | € 126.0 | € 126.0 | ||||
| Debt, stated interest rate | 5.00% | 11.75% | 11.75% | 9.50% | 9.50% | 9.50% | |||||||||||||||||||||||||||||||||
| Debt, unamortized original issue discount | 3.4 | 4.1 | 3.4 | 4.1 | |||||||||||||||||||||||||||||||||||
| Debt, unamortized premium | $ 5.4 | $ 5.4 |