Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Additional Information (Detail)

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Commitments and Contingencies - Additional Information (Detail)
 1 Months Ended 6 Months Ended
Sep. 30, 2012
USD ($)
Feb. 28, 2011
LegalMatter
Jun. 30, 2013
Contractual Agreement One
USD ($)
T
Seat
Jun. 30, 2013
Contractual Agreement One
EUR (€)
Jun. 30, 2013
Contractual Agreement Two
USD ($)
Vessel
Seat
T
Jun. 30, 2013
Contractual Agreement Two
EUR (€)
Commitments and Contingencies Disclosure [Line Items]            
Scheduled delivery date of ships under construction     January 2014 January 2014 Fourth quarter of 2015 and the first quarter of 2017 Fourth quarter of 2015 and the first quarter of 2017
Capacity of ship, tons     144,000 144,000 163,000 163,000
Capacity of ship, berths     4,000 4,000 4,200 4,200
Aggregate contract price of new ships     $ 814,300,000 € 625,900,000 $ 1,800,000,000 € 1,400,000,000
Export credit facility financing as percentage of contract price     90.00% 90.00% 80.00% 80.00%
Cruising ships to be built         2 2
Number of individual plaintiff's claims   6        
Awarded wages to plaintiffs $ 100,000