Subsequent Event - Additional Information (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	6 Months Ended
Jun. 30, 2011 Year
Acquisition \| Solstice-class, Celebrity Silhouette
Subsequent Event [Line Items]
Unsecured term loan	$ 632.0
Percentage of unsecured term loan guaranteed by Hermes	95.00%
Unsecured term loan, amortization period (in year)	12
Additional interest above LIBOR rate	0.40%
Unsecured term loan, interest rate	0.81%
Debt Instrument Amended And Restated
Subsequent Event [Line Items]
Amended and restated unsecured revolving facility, effective date	Jul. 21, 2011
Unsecured term loan	1,225.0
Amended Line of Credit facility	875.0
Current Line of Credit facility	525.0
Maximum Line of Credit facility	$ 1,400.0
Additional interest above LIBOR rate	2.00%
Unsecured revolving credit facility fee	0.42%
Debt Instrument Amended And Restated \| Before Amendment
Subsequent Event [Line Items]
Debt termination month and year	2012-06
Debt Instrument Amended And Restated \| After Amendment
Subsequent Event [Line Items]
Debt termination date	Jul. 12, 2016
Dividend Declared
Subsequent Event [Line Items]
Dividend declared, date of declaration	Jul. 27, 2011
Dividend declared, payable per share	$ 0.10
Dividend declared, holders record date	Aug. 12, 2011
Dividend declared, payment date	Aug. 30, 2011

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