Basis of Presentation and Nature of Operations - Substantial Expenses in Connection with Acquisition (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended
May 31, 2013
Business Acquisition [Line Items]
Legal expenses	$ 10.3
Professional fees and consulting	7.5
Internal labor	3.0
Costs related to the previously planned divestiture of the Liquid Divert and Attitude Control Systems (the "LDACS") business, including $0.3 million of internal labor	1.5
Other	1.1
Total expenses related to acquisition	$ 23.4

For transactions that are recognized separately from the acquisition of assets and assumptions of liabilities in the business combination, such as related to pre-existing relationships with the acquiree, this element represents the disclosure of the amount of acquisition related costs which have been expensed.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (f)

-URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463

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