Asset backed loans and other invested assets.

No definition available.

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- Definition

Asset Backed Loans And Other Invested Assets Gross

+ References

No definition available.

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- Definition

Available For Sale Securities Carrying Value

+ References

No definition available.

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- Definition

Funds Withheld Receivable

+ References

No definition available.

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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

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- Definition

Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275

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- Definition

Amount of increase in assets, excluding financial assets and goodwill, lacking physical substance with an indefinite life, from an acquisition.

+ References

No definition available.

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- Definition

Percentage of fair value of reporting unit in excess of carrying amount.

+ References

No definition available.

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Significant Accounting Policies and Practices and Recent Accounting Pronouncements - Goodwill and Intangibles (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Finite-Lived Intangible Assets [Line Items]
Funds Withheld Receivable	$ 1,650.4	$ 1,710.1
Asset Backed Loans And Other Invested Assets Gross	46.0	274.6
Asset Backed Loans And Other Invested Assets	35.0	226.7
Available For Sale Securities Carrying Value	$ 52.2
Indefinite-lived Intangible Assets Acquired			$ 341.5
Goodwill, Acquired During Period			$ 1,054.7
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)		31.9
Customer Relationships [Member] \| Weighted average
Finite-Lived Intangible Assets [Line Items]
Amortization period, intangible asset	18 years 6 months
Customer Relationships [Member] \| Maximum
Finite-Lived Intangible Assets [Line Items]
Amortization period, intangible asset	20 years
Technology Assets [Member] \| Weighted average
Finite-Lived Intangible Assets [Line Items]
Amortization period, intangible asset	11 years 2 months 6 days
Technology Assets [Member] \| Maximum
Finite-Lived Intangible Assets [Line Items]
Amortization period, intangible asset	18 years
Trade Names [Member] \| Weighted average
Finite-Lived Intangible Assets [Line Items]
Amortization period, intangible asset	11 years 4 months 12 days
Global batteries and appliances [Member]
Finite-Lived Intangible Assets [Line Items]
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount	157.00%
Hardware and home improvement [Member]
Finite-Lived Intangible Assets [Line Items]
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount	110.00%
Global Pet Supplies [Member]
Finite-Lived Intangible Assets [Line Items]
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount	58.00%
Home and Garden [Member]
Finite-Lived Intangible Assets [Line Items]
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount	326.00%
Spectrum Brands [Member]
Finite-Lived Intangible Assets [Line Items]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	$ 4.7
FOH [Member] \| Trademarks and Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets Acquired		9.9
Goodwill, Acquired During Period		$ 16.2