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- Definition

Available for sale depressed securities fair value disclosure.

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- Definition

Equity Securities Holdings Exposure Amount of Single Issuer Greater than Stated Percentage of Total Investments

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- Definition

Investment Securities Held by Subsidiaries Subject to Specialized Industry Accounting Principles at Fair Value

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- Definition

Number of Investment Holdings in Industry

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- Definition

Percentage of investments fair value in relation to invested assets portfolio.

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The amount of other than temporary impairment losses on investments in debt and equity securities categorized as Available-for-sale which have been recognized in earnings during the period. Such impairment losses consist of other than temporary impairments (OTTI) on equity securities, credit losses on investments in debt securities, and when the entity intends to sell an impaired debt security or it is more likely than not that the entity will be required to sell the impaired debt security before recovery of its amortized cost basis.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27161-111563

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Funds Withheld Receivables Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014	Jun. 30, 2016
Additional Information [Line Items]
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Available-for-sale Securities	$ 7.4	$ 2.3	$ 3.0
Equity Securities Holdings Exposure Amount of Single Issuer Greater than Stated Percentage of Total Investments				10.00%
Insurance Segment [Member]
Additional Information [Line Items]
Fair value on securities	$ 39.6	$ 84.4
Fair Value, Concentration of Risk, All Financial Instruments [Member]
Additional Information [Line Items]
Percentage Of Investments Fair Value In Relation To Invested Assets Portfolio		24.00%		40.90%
Fair Value, Concentration of Risk, All Financial Instruments [Member] \| Financial Services Sector [Member]
Additional Information [Line Items]
Number Of Investment Holdings In Industry	81	107
Equity Securities Holdings Exposure Amount of Single Issuer Greater than Stated Percentage of Total Investments	48.00%	41.00%
Fair Value, Concentration of Risk, All Financial Instruments [Member] \| Energy, Mining and Metals Sector [Member]
Additional Information [Line Items]
Number Of Investment Holdings In Industry	74	98
Equity Securities Holdings Exposure Amount of Single Issuer Greater than Stated Percentage of Total Investments	43.40%	39.70%
Fair Value, Concentration of Risk, All Financial Instruments [Member] \| Funds Withheld Receivables [Member] \| Financial Services Sector [Member]
Additional Information [Line Items]
Percentage Of Investments Fair Value In Relation To Invested Assets Portfolio	14.10%	15.80%
Fair Value, Concentration of Risk, All Financial Instruments [Member] \| Funds Withheld Receivables [Member] \| Financial Services Sector [Member] \| Asset-backed securities
Additional Information [Line Items]
Investment Securities Held by Subsidiaries Subject to Specialized Industry Accounting Principles at Fair Value	$ 232.8	$ 269.7
Fair Value, Concentration of Risk, All Financial Instruments [Member] \| Funds Withheld Receivables [Member] \| Energy, Mining and Metals Sector [Member]
Additional Information [Line Items]
Percentage Of Investments Fair Value In Relation To Invested Assets Portfolio	11.40%	13.80%
Fair Value, Concentration of Risk, All Financial Instruments [Member] \| Funds Withheld Receivables [Member] \| Energy, Mining and Metals Sector [Member] \| Asset-backed securities
Additional Information [Line Items]
Investment Securities Held by Subsidiaries Subject to Specialized Industry Accounting Principles at Fair Value	$ 188.6	$ 236.6