Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.18)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 12

-Article 7

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 18

-Article 5

Name:	us-gaap_Assets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Operating Segments and Related Disclosures - Components of Assets (Detail) (USD $) In Millions, unless otherwise specified	May 31, 2013	Nov. 30, 2012	Nov. 30, 2011
Segment Reporting Information [Line Items]
Identifiable assets		$ 719.9	$ 701.9
Assets	1,411.1	919.3	939.5
Aerospace and Defense
Segment Reporting Information [Line Items]
Identifiable assets		637.6	622.8
Real Estate
Segment Reporting Information [Line Items]
Identifiable assets		82.3	79.1
Corporate retirement benefit plan expense
Segment Reporting Information [Line Items]
Assets		$ 199.4	$ 237.6