Comprehensive Income (Tables)

3 Months Ended

Mar. 31, 2023

Equity [Abstract]

Schedule of Components of Other Comprehensive Income and Income Tax Expense Allocated to Each Component

The components of other comprehensive income and income tax expense allocated to each component for the three months ended March 31, 2023 and 2022 were as follows:

	Three Months Ended March 31, 2023
	Before Tax		Income Tax		Net of Tax
Translation adjustments	$	0.2	$	—	$	0.2
Adjustment for net periodic pension and other postretirement benefits plans		0.2		0.1		0.1
Other comprehensive income	$	0.4	$	0.1	$	0.3

	Three Months Ended March 31, 2022
	Before Tax		Income Tax		Net of Tax
Translation adjustments	$	0.1	$	—	$	0.1
Adjustment for net periodic pension and other postretirement benefits plans		0.8		0.2		0.6
Other comprehensive income	$	0.9	$	0.2	$	0.7

Schedule of Changes in Accumulated Other Comprehensive Loss

The following table summarizes changes in accumulated other comprehensive loss by component for the three months ended March 31, 2023:

	Pension and Other Postretirement Benefits Plans Cost			Translation Adjustments			Total
Balance at December 31, 2022	$	(67.9	)	$	(15.3	)	$	(83.2	)
Other comprehensive income before reclassifications		—			0.2			0.2
Amounts reclassified from accumulated other comprehensive loss		0.1			—			0.1
Net change in accumulated other comprehensive loss		0.1			0.2			0.3
Balance at March 31, 2023	$	(67.8	)	$	(15.1	)	$	(82.9	)

The following table summarizes changes in accumulated other comprehensive loss by component for the three months ended March 31, 2022:

	Pension and Other Postretirement Benefits Plans Cost			Translation Adjustments			Total
Balance at December 31, 2021	$	(64.4	)	$	(13.9	)	$	(78.3	)
Other comprehensive income before reclassifications		—			0.1			0.1
Amounts reclassified from accumulated other comprehensive loss		0.6			—			0.6
Net change in accumulated other comprehensive loss		0.6			0.1			0.7
Balance at March 31, 2022	$	(63.8	)	$	(13.8	)	$	(77.6	)

Reclassifications from Accumulated Other Comprehensive Loss, Amortization of Pension Plan Cost

Reclassifications from accumulated other comprehensive loss for the three months ended March 31, 2023 and 2022 were as follows:

	Three Months Ended March 31,
	2023		2022
Amortization of pension and other postretirement benefits plans cost:
Net actuarial loss (a)	$	0.2	$	0.8
Reclassifications before tax		0.2		0.8
Income tax expense		0.1		0.2
Reclassifications, net of tax	$	0.1	$	0.6

(a)These accumulated other comprehensive loss components are included in the calculation of net periodic pension and other postretirement benefits plans income recognized in investment and other income, net on the Unaudited Condensed Consolidated Statements of Operations (see Note 6, Retirement Plans).