Fair Value of Financial Instruments - Assets and Liabilities Carrying at Fair Value on Non-Recurring Basis (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Sep. 30, 2013		Sep. 30, 2012
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	$ 709.5		$ 313.5		$ 523.5		$ 206.0
Document Period End Date	Dec. 31, 2013
Assets
Cash and cash equivalents	1,293.8		1,103.7		1,899.7		1,470.7
Derivatives, Assets
Derivatives	294.5				221.8
Fixed maturity securities, available-for-sale:
Asset-backed loans	794.0				560.4
Derivatives, Liabilities
Equity conversion feature of preferred stock	378.0				330.8
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings	0.6		(0.2)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss)	(6.7)		(2.1)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases	192.6		134.2
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales			(9.6)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements	(0.5)		(0.7)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net		[1]	(14.1)	[2]
Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value	2,172.6		1,680.1		1,875.2		1,782.8
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings	146.8		(102.7)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss)	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases	150.6
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Sales	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Transfers, Net	0			[2]
Asset-backed securities [Member]
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	9.8		5.3		5.0		15.9
Derivatives, Liabilities
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss)	(0.2)		(0.1)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net		[1]	(10.5)	[2]
Commercial mortgage-backed securities [Member]
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	6.0		6.1		5.7		5.0
Derivatives, Liabilities
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss)	0.3		0.1
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases			1.0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net		[1]		[2]
Corporates [Member]
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	607.1		256.1		461.1		135.3
Derivatives, Liabilities
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings	0		(0.2)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss)	(6.1)		(2.0)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases	152.6		133.2
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales	0		(9.6)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements	(0.5)		(0.7)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net		[1]	0.1	[2]
Hybrids [Member]
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value			5.0				8.8
Derivatives, Liabilities
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss)			(0.1)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net			(3.7)	[2]
Municipals [Member]
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	34.3
Derivatives, Liabilities
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss)	(0.7)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases	35.0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net		[1]
Held for trading [Member]
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	10.8				10.7
Derivatives, Liabilities
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings	0.1
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	0	[1]
Equity Securities [Member]
Fixed maturity securities, available-for-sale:
Available-for-sale Securities	375.9				352.5
Recurring [Member] | Fair Value [Member]
Assets
Cash and cash equivalents	1,293.8	[3]			1,899.7	[3]
Contingent purchase price reduction receivable	41.5				41.0
Fixed maturity securities, available-for-sale:
Asset-backed loans	794.0				560.4
Total financial assets	911.3				591.6
Liabilities
Total debt	5,351.3	[4]			4,773.2	[4]
Derivatives, Liabilities
Equity conversion feature of preferred stock	378.0				330.8
Redeemable preferred stock, excluding equity conversion feature	378.8				377.1
Investment contracts, included in contractholder funds	12,513.8				12,378.6
Financial Liabilities Fair Value Disclosure	18,243.9				17,528.9
Recurring [Member] | Fair Value [Member] | U.S. Government securities [Member]
Fixed maturity securities, available-for-sale:
Available-for-sale Securities	711.1				1,001.8
Recurring [Member] | Fair Value [Member] | Foreign exchange forward agreements [Member]
Derivatives, Assets
Derivatives	3.2				1.8
Derivatives, Liabilities
Derivative Liability	9.1				10.0
Recurring [Member] | Fair Value [Member] | Commodity swap and option agreements [Member]
Derivatives, Assets
Derivatives	2.0				4.1
Derivatives, Liabilities
Derivative Liability	2.2				2.4
Recurring [Member] | Fair Value [Member] | Call options [Member]
Derivatives, Assets
Derivatives	294.5				221.8
Recurring [Member] | Fair Value [Member] | Available-for-sale embedded derivatives [Member]
Fixed maturity securities, available-for-sale:
Equity securities - available-for-sale	286.9	[5]			271.0	[5]
Recurring [Member] | Fair Value [Member] | FIA embedded derivatives, included in contractholder funds [Member]
Derivatives, Liabilities
Derivative Liability	1,644.7				1,544.4
Recurring [Member] | Fair Value [Member] | Future contracts [Member]
Derivatives, Liabilities
Derivative Liability					1.0
Recurring [Member] | Fair Value [Member] | Asset-backed securities [Member]
Fixed maturity securities, available-for-sale:
Available-for-sale Securities	1,601.8				1,523.1
Recurring [Member] | Fair Value [Member] | Commercial mortgage-backed securities [Member]
Fixed maturity securities, available-for-sale:
Available-for-sale Securities	444.6				454.4
Recurring [Member] | Fair Value [Member] | Corporates [Member]
Fixed maturity securities, available-for-sale:
Available-for-sale Securities	10,046.6				9,418.3
Recurring [Member] | Fair Value [Member] | Hybrids [Member]
Fixed maturity securities, available-for-sale:
Available-for-sale Securities	418.1				428.8
Recurring [Member] | Fair Value [Member] | Municipals [Member]
Fixed maturity securities, available-for-sale:
Available-for-sale Securities	1,121.4				1,007.0
Recurring [Member] | Fair Value [Member] | Agency residential mortgage-backed securities [Member]
Fixed maturity securities, available-for-sale:
Available-for-sale Securities	91.0				98.6
Recurring [Member] | Fair Value [Member] | Non-agency residential mortgage-backed securities [Member]
Fixed maturity securities, available-for-sale:
Available-for-sale Securities	1,652.0				1,368.0
Recurring [Member] | Carrying Amount [Member]
Fixed maturity securities, available-for-sale:
Asset-backed loans	794.0				560.4
Total financial assets	911.3				591.6
Liabilities
Total debt	5,165.9	[4]			4,896.1	[4]
Derivatives, Liabilities
Redeemable preferred stock, excluding equity conversion feature	333.4				329.4
Investment contracts, included in contractholder funds	13,875.0				13,703.8
Financial Liabilities Fair Value Disclosure	19,374.3				18,929.3
Recurring [Member] | Equity securities [Member] | Fair Value [Member]
Fixed maturity securities, available-for-sale:
Equity securities - trading	89.0	[5]			81.5	[5]
Recurring [Member] | Policy loans [Member] | Fair Value [Member]
Fixed maturity securities, available-for-sale:
Policy loans and other invested assets	117.3				31.2
Recurring [Member] | Policy loans [Member] | Carrying Amount [Member]
Fixed maturity securities, available-for-sale:
Policy loans and other invested assets	117.3				31.2
Recurring [Member] | Level 1 [Member]
Assets
Cash and cash equivalents	1,293.8	[3]			1,899.7	[3]
Contingent purchase price reduction receivable
Fixed maturity securities, available-for-sale:
Asset-backed loans
Total financial assets	0				0
Liabilities
Total debt		[4]			0	[4]
Derivatives, Liabilities
Equity conversion feature of preferred stock
Redeemable preferred stock, excluding equity conversion feature
Investment contracts, included in contractholder funds
Financial Liabilities Fair Value Disclosure	0				0
Recurring [Member] | Level 1 [Member] | U.S. Government securities [Member]
Fixed maturity securities, available-for-sale:
Available-for-sale Securities	502.5				790.9
Recurring [Member] | Level 1 [Member] | Foreign exchange forward agreements [Member]
Derivatives, Assets
Derivatives
Derivatives, Liabilities
Derivative Liability
Recurring [Member] | Level 1 [Member] | Commodity swap and option agreements [Member]
Derivatives, Assets
Derivatives
Derivatives, Liabilities
Derivative Liability
Recurring [Member] | Level 1 [Member] | Call options [Member]
Derivatives, Assets
Derivatives
Recurring [Member] | Level 1 [Member] | Available-for-sale embedded derivatives [Member]
Fixed maturity securities, available-for-sale:
Equity securities - available-for-sale		[5]				[5]
Recurring [Member] | Level 1 [Member] | FIA embedded derivatives, included in contractholder funds [Member]
Derivatives, Liabilities
Derivative Liability
Recurring [Member] | Level 1 [Member] | Future contracts [Member]
Derivatives, Liabilities
Derivative Liability
Recurring [Member] | Level 1 [Member] | Asset-backed securities [Member]
Fixed maturity securities, available-for-sale:
Available-for-sale Securities
Recurring [Member] | Level 1 [Member] | Commercial mortgage-backed securities [Member]
Fixed maturity securities, available-for-sale:
Available-for-sale Securities
Recurring [Member] | Level 1 [Member] | Corporates [Member]
Fixed maturity securities, available-for-sale:
Available-for-sale Securities
Recurring [Member] | Level 1 [Member] | Hybrids [Member]
Fixed maturity securities, available-for-sale:
Available-for-sale Securities
Recurring [Member] | Level 1 [Member] | Municipals [Member]
Fixed maturity securities, available-for-sale:
Available-for-sale Securities
Recurring [Member] | Level 1 [Member] | Agency residential mortgage-backed securities [Member]
Fixed maturity securities, available-for-sale:
Available-for-sale Securities
Recurring [Member] | Level 1 [Member] | Non-agency residential mortgage-backed securities [Member]
Fixed maturity securities, available-for-sale:
Available-for-sale Securities
Recurring [Member] | Level 1 [Member] | Equity securities [Member]
Fixed maturity securities, available-for-sale:
Equity securities - trading	78.2	[5]			70.8	[5]
Recurring [Member] | Level 1 [Member] | Policy loans [Member]
Fixed maturity securities, available-for-sale:
Policy loans and other invested assets
Recurring [Member] | Level 2 [Member]
Assets
Cash and cash equivalents		[3]			0	[3]
Contingent purchase price reduction receivable
Fixed maturity securities, available-for-sale:
Asset-backed loans
Total financial assets	0				0
Liabilities
Total debt	5,351.3	[4]			4,773.2	[4]
Derivatives, Liabilities
Equity conversion feature of preferred stock
Redeemable preferred stock, excluding equity conversion feature
Investment contracts, included in contractholder funds
Financial Liabilities Fair Value Disclosure	5,351.3				4,773.2
Recurring [Member] | Level 2 [Member] | U.S. Government securities [Member]
Fixed maturity securities, available-for-sale:
Available-for-sale Securities	208.6				210.9
Recurring [Member] | Level 2 [Member] | Foreign exchange forward agreements [Member]
Derivatives, Assets
Derivatives	3.2				1.8
Derivatives, Liabilities
Derivative Liability	9.1				10.0
Recurring [Member] | Level 2 [Member] | Commodity swap and option agreements [Member]
Derivatives, Assets
Derivatives	2.0				4.1
Derivatives, Liabilities
Derivative Liability	2.2				2.4
Recurring [Member] | Level 2 [Member] | Call options [Member]
Derivatives, Assets
Derivatives	294.5				221.8
Recurring [Member] | Level 2 [Member] | Available-for-sale embedded derivatives [Member]
Fixed maturity securities, available-for-sale:
Equity securities - available-for-sale	286.9	[5]			271.0	[5]
Recurring [Member] | Level 2 [Member] | FIA embedded derivatives, included in contractholder funds [Member]
Derivatives, Liabilities
Derivative Liability
Recurring [Member] | Level 2 [Member] | Future contracts [Member]
Derivatives, Liabilities
Derivative Liability					1.0
Recurring [Member] | Level 2 [Member] | Asset-backed securities [Member]
Fixed maturity securities, available-for-sale:
Available-for-sale Securities	1,592.0				1,518.1
Recurring [Member] | Level 2 [Member] | Commercial mortgage-backed securities [Member]
Fixed maturity securities, available-for-sale:
Available-for-sale Securities	438.6				448.7
Recurring [Member] | Level 2 [Member] | Corporates [Member]
Fixed maturity securities, available-for-sale:
Available-for-sale Securities	9,439.5				8,957.2
Recurring [Member] | Level 2 [Member] | Hybrids [Member]
Fixed maturity securities, available-for-sale:
Available-for-sale Securities	418.1				428.8
Recurring [Member] | Level 2 [Member] | Municipals [Member]
Fixed maturity securities, available-for-sale:
Available-for-sale Securities	1,087.1				1,007.0
Recurring [Member] | Level 2 [Member] | Agency residential mortgage-backed securities [Member]
Fixed maturity securities, available-for-sale:
Available-for-sale Securities	91.0				98.6
Recurring [Member] | Level 2 [Member] | Non-agency residential mortgage-backed securities [Member]
Fixed maturity securities, available-for-sale:
Available-for-sale Securities	1,652.0				1,368.0
Recurring [Member] | Level 2 [Member] | Equity securities [Member]
Fixed maturity securities, available-for-sale:
Equity securities - trading		[5]				[5]
Recurring [Member] | Level 2 [Member] | Policy loans [Member]
Fixed maturity securities, available-for-sale:
Policy loans and other invested assets
Recurring [Member] | Level 3 [Member]
Assets
Cash and cash equivalents		[3]				[3]
Contingent purchase price reduction receivable	41.5				41.0
Fixed maturity securities, available-for-sale:
Asset-backed loans	794.0				560.4
Total financial assets	911.3				591.6
Liabilities
Total debt		[4]				[4]
Derivatives, Liabilities
Equity conversion feature of preferred stock	378.0				330.8
Redeemable preferred stock, excluding equity conversion feature	378.8				377.1
Investment contracts, included in contractholder funds	12,513.8				12,378.6
Financial Liabilities Fair Value Disclosure	12,892.6				12,755.7
Recurring [Member] | Level 3 [Member] | U.S. Government securities [Member]
Fixed maturity securities, available-for-sale:
Available-for-sale Securities
Recurring [Member] | Level 3 [Member] | Foreign exchange forward agreements [Member]
Derivatives, Assets
Derivatives
Derivatives, Liabilities
Derivative Liability
Recurring [Member] | Level 3 [Member] | Commodity swap and option agreements [Member]
Derivatives, Assets
Derivatives
Derivatives, Liabilities
Derivative Liability
Recurring [Member] | Level 3 [Member] | Call options [Member]
Derivatives, Assets
Derivatives
Recurring [Member] | Level 3 [Member] | Available-for-sale embedded derivatives [Member]
Fixed maturity securities, available-for-sale:
Equity securities - available-for-sale		[5]				[5]
Recurring [Member] | Level 3 [Member] | FIA embedded derivatives, included in contractholder funds [Member]
Derivatives, Liabilities
Derivative Liability	1,644.7				1,544.4
Recurring [Member] | Level 3 [Member] | Future contracts [Member]
Derivatives, Liabilities
Derivative Liability
Recurring [Member] | Level 3 [Member] | Asset-backed securities [Member]
Fixed maturity securities, available-for-sale:
Available-for-sale Securities	9.8				5.0
Recurring [Member] | Level 3 [Member] | Commercial mortgage-backed securities [Member]
Fixed maturity securities, available-for-sale:
Available-for-sale Securities	6.0				5.7
Recurring [Member] | Level 3 [Member] | Corporates [Member]
Fixed maturity securities, available-for-sale:
Available-for-sale Securities	607.1				461.1
Recurring [Member] | Level 3 [Member] | Hybrids [Member]
Fixed maturity securities, available-for-sale:
Available-for-sale Securities	0
Recurring [Member] | Level 3 [Member] | Municipals [Member]
Fixed maturity securities, available-for-sale:
Available-for-sale Securities	34.3
Recurring [Member] | Level 3 [Member] | Agency residential mortgage-backed securities [Member]
Fixed maturity securities, available-for-sale:
Available-for-sale Securities
Recurring [Member] | Level 3 [Member] | Non-agency residential mortgage-backed securities [Member]
Fixed maturity securities, available-for-sale:
Available-for-sale Securities
Recurring [Member] | Level 3 [Member] | Equity securities [Member]
Fixed maturity securities, available-for-sale:
Equity securities - trading	10.8	[5]			10.7	[5]
Recurring [Member] | Level 3 [Member] | Policy loans [Member]
Fixed maturity securities, available-for-sale:
Policy loans and other invested assets	117.3				31.2
Contingent purchase price reduction receivable [Member]
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	41.5		41.0		41.0		41.0
Derivatives, Liabilities
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings	0.5
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net		[1]		[2]
FIA embedded derivatives, included in contractholder funds [Member]
Derivatives, Liabilities
Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value	1,644.7		1,517.0		1,544.4		1,550.8
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings	100.3		(33.8)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Sales
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Transfers, Net		[1]		[2]
Front Street Future Policyholder Benefits Reserve [Member]
Derivatives, Liabilities
Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value	149.9
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings	(0.7)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases	150.6
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Sales
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Transfers, Net		[1]
Equity conversion feature of preferred stock [Member]
Derivatives, Liabilities
Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value	378.0		163.1		330.8		232.0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings	47.2		(68.9)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Sales
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Transfers, Net		[1]		[2]

[1] {F|ahBzfndlYmZpbGluZ3MtaHJkcmoLEgZYTUxEb2MiXlhCUkxEb2NHZW5JbmZvOjkzMWUzNTc5OTc5ZDQ0NDA5NDZlZDlmNTcyN2JmYzMyfFRleHRTZWxlY3Rpb246REVBMUNFNjUwNzU2Q0U3MUVERDcwNjlDQTlGMzA0OTIM}

[2] (a)The net transfers in and out of Level 3 during the three months ended December 30, 2012 was exclusively to or from Level 2.

[3] (a)The fair values of cash equivalents and equity investments set forth above are generally based on quoted or observed market prices.

[4] (a)The fair values of debt set forth above are generally based on quoted or observed market prices.

[5] (b)The carrying amounts of trade receivables, accounts payable, accrued investment income and portions of other insurance liabilities approximate fair value due to their short duration and, accordingly, they are not presented in the tables above.