Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 30

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

Subsequent Events - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions		12 Months Ended
	Nov. 04, 2015	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Subsequent Event [Line Items]
Dividend declared per share (USD per share)		$ 0.40	$ 0.34	$ 0.32
Subsequent Event
Subsequent Event [Line Items]
Dividend declared per share (USD per share)	$ 0.1
BioStorage Technologies, Inc. [Member] \| Subsequent Event
Subsequent Event [Line Items]
Business Combination, Consideration Transferred	$ 127.0