Schedule III - Supplemental Insurance Information (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Supplementary Insurance Information [Abstract]
Deferred acquisition costs	$ 340.6	$ 169.2	$ 38.1
Future policy benefits, losses, claims and loss expenses	3,556.8	3,614.8	3,598.2
Other policy claims and benefits payable	51.5	91.1	56.7
Premium revenue	58.8	55.3	39.0
Net investment income	715.5	716.2	369.8
Benefits, claims, losses and settlement expenses	(531.8)	(777.4)	(247.6)
Amortization of deferred acquisition costs	(45.3)	(15.2)	(0.9)
Other operating expenses	$ (111.4)	$ (123.9)	$ (95.8)

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Amount of amortization of deferred policy acquisition costs recognized.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 16

-Article 12

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 235

-Section S99

-Paragraph 1

-Subparagraph (SX 210.12-16)

-URI http://asc.fasb.org/extlink&oid=6588446&loc=d3e574960-122915

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- Definition

Amount of insurance benefits, claims, losses and settlement expenses incurred.

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- Definition

Net amount of deferred policy acquisition costs capitalized on contracts remaining in force on the balance sheet date.

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- Definition

Amount of reserves for future policy claims payable and loss expenses to be incurred.

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- Definition

Amount of net investment income earned.

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Amount of other operating expense incurred.

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Amount of claims and benefits payable not included within other categories.

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- Definition

Amount of premium revenue earned.

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