INCOME TAXES - OPERATING LOSS CARRYFORWARDS (DETAILS) (USD $) In Millions, unless otherwise specified	3 Months Ended			9 Months Ended
	Sep. 30, 2011		Sep. 30, 2010	Sep. 30, 2011		Sep. 30, 2010	Dec. 31, 2010
Operating Loss Carryforwards [Line Items]
Deferred Tax Assets Before Valuation Allowance	$ 1,641.4			$ 1,641.4			$ 1,931.6
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration, Net of Valuation Allowance	917			917
Valuation allowance	143.0		0	143.0		0
Assumed Growth Rate For the Next Five Years, Included in Deferred Tax Valuation Analysis	5.00%			5.00%
Other Tax Carryforward, Gross Amount	1,008.9			1,008.9
Total loss carryforwards	5,249.6			5,249.6
Net operating loss carryforward to be reclassified as non life net operating loss carryforwards	631			631
Net state operating loss carryforwards	17.7			17.7			17.8
Internal Revenue Service (IRS) [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	4,200.0			4,200.0
Non Life Insurance Companies [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	2,484.2			2,484.2
Non Life Insurance Companies [Member] | Carryforward Expiration 2011 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0.1			0.1
Non Life Insurance Companies [Member] | Carryforward Expiration 2013 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0			0
Non Life Insurance Companies [Member] | Carryforward Expiration 2014 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0			0
Non Life Insurance Companies [Member] | Carryforward Expiration 2016 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0			0
Non Life Insurance Companies [Member] | Carryforward Expiration 2018 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0			0
Non Life Insurance Companies [Member] | Carryforward Expiration 2021 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0			0
Non Life Insurance Companies [Member] | Carryforward Expiration 2022 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0			0
Non Life Insurance Companies [Member] | Carryforward Expiration 2023 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	1,996.0	[1]		1,996.0	[1]
Non Life Insurance Companies [Member] | Carryforward Expiration 2024 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	3.2			3.2
Non Life Insurance Companies [Member] | Carryforward Expiration 2025 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	118.8			118.8
Non Life Insurance Companies [Member] | Carryforward Expiration 2027 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	216.8			216.8
Non Life Insurance Companies [Member] | Carryforward Expiration 2028 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0.3			0.3
Non Life Insurance Companies [Member] | Carryforward Expiration 2029 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	149.0			149.0
Life Insurance Companies [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	1,756.5			1,756.5
Life Insurance Companies [Member] | Carryforward Expiration 2011 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0			0
Life Insurance Companies [Member] | Carryforward Expiration 2013 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0			0
Life Insurance Companies [Member] | Carryforward Expiration 2014 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0			0
Life Insurance Companies [Member] | Carryforward Expiration 2016 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0			0
Life Insurance Companies [Member] | Carryforward Expiration 2018 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	1,522.8	[1]		1,522.8	[1]
Life Insurance Companies [Member] | Carryforward Expiration 2021 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	29.6			29.6
Life Insurance Companies [Member] | Carryforward Expiration 2022 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	204.1			204.1
Life Insurance Companies [Member] | Carryforward Expiration 2023 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0			0
Life Insurance Companies [Member] | Carryforward Expiration 2024 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0			0
Life Insurance Companies [Member] | Carryforward Expiration 2025 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0			0
Life Insurance Companies [Member] | Carryforward Expiration 2027 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0			0
Life Insurance Companies [Member] | Carryforward Expiration 2028 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0			0
Life Insurance Companies [Member] | Carryforward Expiration 2029 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0			0
Carryforward Expiration 2011 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration dates				2011
Other Tax Carryforward, Gross Amount	0			0
Total loss carryforwards	0.1			0.1
Carryforward Expiration 2013 [Member]
Operating Loss Carryforwards [Line Items]
Other Tax Carryforward, Gross Amount	941.5			941.5
Total loss carryforwards	941.5			941.5
Other Tax Carryforward, Expiration Dates				2013
Carryforward Expiration 2014 [Member]
Operating Loss Carryforwards [Line Items]
Other Tax Carryforward, Gross Amount	28.6			28.6
Total loss carryforwards	28.6			28.6
Other Tax Carryforward, Expiration Dates				2014
Carryforward Expiration 2016 [Member]
Operating Loss Carryforwards [Line Items]
Other Tax Carryforward, Gross Amount	38.8			38.8
Total loss carryforwards	38.8			38.8
Other Tax Carryforward, Expiration Dates				2016
Carryforward Expiration 2018 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration dates				2018
Other Tax Carryforward, Gross Amount	0			0
Total loss carryforwards	1,522.8			1,522.8
Carryforward Expiration 2021 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration dates				2021
Other Tax Carryforward, Gross Amount	0			0
Total loss carryforwards	29.6			29.6
Carryforward Expiration 2022 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration dates				2022
Other Tax Carryforward, Gross Amount	0			0
Total loss carryforwards	204.1			204.1
Carryforward Expiration 2023 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration dates				2023
Other Tax Carryforward, Gross Amount	0			0
Total loss carryforwards	1,996.0			1,996.0
Carryforward Expiration 2024 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration dates				2024
Other Tax Carryforward, Gross Amount	0			0
Total loss carryforwards	3.2			3.2
Carryforward Expiration 2025 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration dates				2025
Other Tax Carryforward, Gross Amount	0			0
Total loss carryforwards	118.8			118.8
Carryforward Expiration 2027 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration dates				2027
Other Tax Carryforward, Gross Amount	0			0
Total loss carryforwards	216.8			216.8
Carryforward Expiration 2028 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration dates				2028
Other Tax Carryforward, Gross Amount	0			0
Total loss carryforwards	0.3			0.3
Carryforward Expiration 2029 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration dates				2029
Other Tax Carryforward, Gross Amount	0			0
Total loss carryforwards	$ 149.0			$ 149.0

[1] The allocation of the NOLs summarized above assumes the IRS does not take an adverse position in the future regarding the tax position we plan to take in our tax returns with respect to the allocation of cancellation of indebtedness income. If the IRS disagrees with the tax position we plan to take with respect to the allocation of cancellation of indebtedness income, and their position prevails, approximately $631 million of the NOLs expiring in 2018 would be characterized as non-life NOLs.