Other Comprehensive Income

3 Months Ended

Mar. 31, 2012

Other Comprehensive Income [Abstract]

Other Comprehensive Income

8. Other Comprehensive Income

The following table provides a reconciliation of gross unrealized investment gains (losses) to the net balance shown in the Consolidated Statements of Comprehensive Income:

	Three Months Ended March 31,
	2012							2011
(in millions)	Pre-Tax		Tax Benefit (Expense)			Net of Tax		Pre-Tax		Tax Benefit (Expense)		Net of Tax
Unrealized gains on available-for-sale securities:
Unrealized gains arising during period	$	70.5	$	(21.0	)	$	49.5	$	6.4	$	5.2	$	11.6
Less: reclassification adjustments for gains realized in net income		2.3		3.3			5.6		2.9		2.1		5.0
Other comprehensive income	$	68.2	$	(24.3	)	$	43.9	$	3.5	$	3.1	$	6.6