Fair Value Measurements, Derivative Instruments and Hedging Activities - Sale and Impairment of Ships (Details) $ in Millions	3 Months Ended
Nov. 30, 2014 USD ($) Passenger	May 31, 2014 USD ($) Passenger
Grand Holiday
Property, Plant and Equipment [Line Items]
Passenger Capacity \| Passenger	1,440
Impairment of long-lived assets to be disposed of \| $	$ 31
Grand Celebration
Property, Plant and Equipment [Line Items]
Passenger Capacity \| Passenger		1,490
Impairment of long-lived assets to be disposed of \| $		$ 22

The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2611-110228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

Name:	us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration