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Amount of transfers of assets measured on a recurring basis out of Level 1 into Level 2 of the fair value hierarchy.

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Amount of transfers of assets measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 3.

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Fair Value Measurements (Details 3) - Recurring Fair Value Measurements - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Available-for-sale \| Fixed maturities
Fair Value Hierarchy Levels Transfers
Transfers out of Level 2 into Level 3	$ 15.0	$ 16.4	$ 41.2	$ 53.4
Transfers out of Level 3 into Level 2	40.1	17.9	131.9	62.3
Available-for-sale \| Corporate debt securities
Fair Value Hierarchy Levels Transfers
Transfers out of Level 2 into Level 3	15.0	15.7	41.2	46.6
Transfers out of Level 3 into Level 2	6.1		73.6	6.1
Available-for-sale \| Commercial mortgage-backed securities
Fair Value Hierarchy Levels Transfers
Transfers out of Level 2 into Level 3		0.7		6.8
Transfers out of Level 3 into Level 2		1.4		2.5
Available-for-sale \| Collateralized debt obligations
Fair Value Hierarchy Levels Transfers
Transfers out of Level 3 into Level 2		16.5		24.0
Available-for-sale \| Other debt obligations
Fair Value Hierarchy Levels Transfers
Transfers out of Level 3 into Level 2	34.0		58.3	29.7
Available-for-sale \| Equity securities
Fair Value Hierarchy Levels Transfers
Transfers out of Level 2 into Level 3				0.2
Separate account assets
Fair Value Hierarchy Levels Transfers
Transfers out of Level 1 into Level 2	24.6	2.1	26.6	17.5
Transfers out of Level 2 into Level 1	1.2	17.5	8.0	71.3
Transfers out of Level 2 into Level 3	0.1	2.3	0.2	4.4
Transfers out of Level 3 into Level 2	0.1	$ 4.2	0.2	$ 11.7
Other investments
Fair Value Hierarchy Levels Transfers
Transfers out of Level 2 into Level 1	$ 141.4		141.4
Transfers out of Level 3 into Level 2			$ 35.0