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Change in Net Carrying Amount of Goodwill by Segment (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014
Goodwill [Line Items]
Accumulated impairment losses	$ 489.6
Doors
Goodwill [Line Items]
Accumulated impairment losses	399.5
Security and Storage
Goodwill [Line Items]
Accumulated impairment losses	$ 90.1

X

- Definition

Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a,h)

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_GoodwillLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration