Quarterly report pursuant to Section 13 or 15(d)

Accumulated Other Comprehensive Income (Loss) (Detail)

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Accumulated Other Comprehensive Income (Loss) (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Dec. 31, 2012
Other Comprehensive Income (Loss) [Line Items]      
Beginning balance $ 2,018,784 $ 1,844,463 $ 1,844,463
Current period other comprehensive loss before reclassifications (21,415) 18,682 2,175
Ending Balance 2,401,588   2,018,784
Change Related to Cash Flow Hedges
     
Other Comprehensive Income (Loss) [Line Items]      
Beginning balance (7,872)    
Current period other comprehensive loss before reclassifications (19,245)    
Amounts reclassified from accumulated other comprehensive income (loss) (1,794) [1]    
Ending Balance (28,911) [2]    
Accumulated Other Comprehensive Income (Loss)
     
Other Comprehensive Income (Loss) [Line Items]      
Beginning balance (17,619)    
Current period other comprehensive loss before reclassifications (19,245)    
Amounts reclassified from accumulated other comprehensive income (loss) (1,680)    
Ending Balance (38,544)    
Change Related to Shipboard Retirement Plan
     
Other Comprehensive Income (Loss) [Line Items]      
Beginning balance (9,747)    
Amounts reclassified from accumulated other comprehensive income (loss) 114 [3]    
Ending Balance $ (9,633)    
[1] Amount reclassified to fuel expense.
[2] Of the existing amounts related to derivatives designated as cash flow hedges, $6.3 million is expected to be reclassified into earnings in the next 12 months.
[3] Amortization of prior-service cost and actuarial loss reclassified to payroll and related expense.