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Acquisitions - Selected Financial Information (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Sep. 30, 2011	Sep. 30, 2011		Sep. 30, 2010
Business Acquisition [Line Items]
Total revenues	$ 290,886	$ 4,163,549	[1]	$ 4,064,874
Income, net of taxes	$ 23,703
[1] Reported revenues and net income for Fiscal 2011 include the actual reported results of FGL for the approximate six month period subsequent to April 6, 2011. Reported net income also includes the $158,341 non-recurring bargain purchase gain which was recorded as of the FGL Acquisition Date, and reflects the retrospective measurement period adjustments disclosed above.

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- Definition

The pro forma income from continuing operations before changes in accounting and extraordinary items, net of tax effect, for the period as if the business combination or combinations had been completed at the beginning of a period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

-URI http://asc.fasb.org/extlink&oid=7659399&loc=d3e1392-128463

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- Definition

The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

-URI http://asc.fasb.org/extlink&oid=7659399&loc=d3e1392-128463

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