Summary of Management Ncl Corporation Units Activity (Detail)	3 Months Ended
Mar. 31, 2013
Time Based Units
Number of Management NCL Corporation Units
Outstanding as of December 31, 2012	2,265,554
Granted
Forfeited
Outstanding as of March 31, 2013	2,265,554
Vested as of March 31, 2013	1,641,326
Non-vested as of March 31, 2013	624,228
Performance-Based Units
Number of Management NCL Corporation Units
Outstanding as of December 31, 2012	3,495,737
Granted
Forfeited
Outstanding as of March 31, 2013	3,495,737
Vested as of March 31, 2013	875,364
Non-vested as of March 31, 2013	2,620,373

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(i)-(ii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(2)(b)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(2)(a)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant