Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2021

Equity [Abstract]

Changes in Each Component of Accumulated Other Comprehensive Loss

The following tables summarize the changes in each component of Accumulated other comprehensive loss, net of tax in the three months ended March 31, 2021 and 2020:

(in millions) (a)	Actuarial Losses		Prior Service Costs		Foreign Currency Translation		Unrealized Gain (Loss) on Interest Rate Swaps		Total
Balance at January 1, 2021	$	(88.2)	$	(2.6)	$	1.3	$	(2.2)	$	(91.7)
Other comprehensive (loss) income before reclassifications	(0.2)		—		(1.2)		1.0		(0.4)
Amounts reclassified from accumulated other comprehensive loss	0.9		—		—		(0.2)		0.7
Net current-period other comprehensive income (loss)	0.7		—		(1.2)		0.8		0.3
Balance at March 31, 2021	$	(87.5)	$	(2.6)	$	0.1	$	(1.4)	$	(91.4)

(in millions) (a)	Actuarial Losses		Prior Service Costs		Foreign Currency Translation		Unrealized Gain (Loss) on Interest Rate Swaps		Total
Balance at January 1, 2020	$	(80.4)	$	(2.4)	$	(7.1)	$	0.8	$	(89.1)
Other comprehensive income (loss) before reclassifications	1.1		—		(6.1)		(3.0)		(8.0)
Amounts reclassified from accumulated other comprehensive loss	0.7		—		—		(0.1)		0.6
Net current-period other comprehensive income (loss)	1.8		—		(6.1)		(3.1)		(7.4)
Balance at March 31, 2020	$	(78.6)	$	(2.4)	$	(13.2)	$	(2.3)	$	(96.5)

(a)    Amounts in parentheses indicate losses.

Reclassification from Accumulated Other Comprehensive Loss, Net of Tax

The following table summarizes the amounts reclassified from Accumulated other comprehensive loss, net of tax, in the three months ended March 31, 2021 and 2020 and the affected line item in the Condensed Consolidated Statements of Operations:

Details about Accumulated Other Comprehensive Loss Components	Amount Reclassified from Accumulated Other Comprehensive Loss				Affected Line Item in Condensed Consolidated Statements of Operations
	2021		2020
(in millions) (a)
Amortization of actuarial losses of defined benefit pension plans	$	(1.2)	$	(0.9)	Other (income) expense, net
Amortization of prior service costs of defined benefit pension plans	0.0		0.0		Other (income) expense, net
Interest rate swaps	0.2		0.1		Interest expense
Total before tax	(1.0)		(0.8)
Income tax benefit	0.3		0.2		Income tax expense
Total reclassifications for the period, net of tax	$	(0.7)	$	(0.6)

(a)    Amounts in parentheses indicate losses.