7. Other Comprehensive Income

The following tables provide changes in other comprehensive income.

	Three Months Ended March 31,
	2018									2017
				Tax									Tax
				Benefit			Net of						Benefit			Net of
(in millions)	Pre-Tax			(Expense)			Tax			Pre-Tax			(Expense)			Tax
Unrealized gains (losses) on available-for-sale securities:
Unrealized gains (losses) arising during period	$	(153.7	)	$	32.1		$	(121.6	)	$	38.0		$	(13.3	)	$	24.7
Amount of realized gains from sales and other		0.2			(2.5	)		(2.3	)		(4.1	)		(1.7	)		(5.8	)
Portion of other-than-temporary impairment losses recognized in earnings		0.5			(0.1	)		0.4			0.2			(0.1	)		0.1
Adoption of Accounting Standards Update 2016-01 and 2018-02		(146.5	)		64.9			(81.6	)		—			—			—
Net unrealized gains (losses)		(299.5	)		94.4			(205.1	)		34.1			(15.1	)		19.0
Pension and postretirement benefits:
Net change in net actuarial loss and prior service cost		(2.9	)		0.6			(2.3	)		3.5			(1.2	)		2.3
Adoption of Accounting Standards Update 2018-02		—			(16.2	)		(16.2	)		—			—			—
Net pension and postretirement benefits		(2.9	)		(15.6	)		(18.5	)		3.5			(1.2	)		2.3
Cumulative foreign currency translation adjustment:
Foreign currency translation recognized during the period		(0.6	)		0.1			(0.5	)		7.8			(2.7	)		5.1
Adoption of Accounting Standards Update 2018-02		—			(3.9	)		(3.9	)		—			—			—
Net cumulative foreign currency translation adjustment		(0.6	)		(3.8	)		(4.4	)		7.8			(2.7	)		5.1
Other comprehensive (loss) income	$	(303.0	)	$	75.0		$	(228.0	)	$	45.4		$	(19.0	)	$	26.4

Reclassifications out of accumulated other comprehensive income were as follows:

	Three Months Ended
	March 31,
(in millions)	2018			2017
	Amount Reclassified from
Details about Accumulated Other	Accumulated Other						Affected Line Item in the Statement
Comprehensive Income Components	Comprehensive Income						Where Net Income is Presented
Unrealized gains on available-for-sale securities	$	(0.2	)	$	4.1		Net realized (losses) gains from sales and other
		(0.5	)		(0.2	)	Net other-than-temporary impairment losses on investments recognized in earnings
		(0.7	)		3.9		Total before tax
		2.6			1.8		Tax benefit
		1.9			5.7		Net of tax
Amortization of defined benefit pension and postretirement plans		(2.5	)		(3.5	)	Loss adjustment expenses and other operating expenses
		0.5			1.2		Tax benefit
		(2.0	)		(2.3	)	Net of tax
Total reclassifications for the period	$	(0.1	)	$	3.4		(Expense) benefit to income, net of tax

The amount reclassified from accumulated other comprehensive income for the pension and postretirement benefits was allocated approximately 40% to loss adjustment expenses and 60% to other operating expenses for the three months ended March 31, 2018 and 2017.