11. Income Taxes (Details 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011 As restated and amended [Member]	Dec. 31, 2010 As restated and amended [Member]
Income tax expense (benefit)	$ 16.2	$ (6.3)	$ (32.3)
Income tax from OCI:
Unrealized	24.9	4.2	9.2
Pension
Policy dividend obligation & deferred policy acquisition cost
Other
Income tax related to cumulative effect of change in accounting			0.9
Total income tax recorded to all components of income	$ 41.1	$ (2.1)	$ (22.2)