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Pensions and Postretirement Benefits (Tables)

12 Months Ended

Dec. 31, 2021

Retirement Benefits [Abstract]

Schedule of Change in Projected Benefit Obligations

The following table sets forth the changes in projected benefit obligations and plan assets of our defined benefit pension and other non-qualified and postretirement plans as of and for the years ended December 31, 2021 and 2020.

			Pension Benefits												Other Benefits
			2021						2020						2021						2020
			(in millions)
Change in Projected Benefit Obligations
Projected benefit obligations at beginning of year			$	350.7					$	329.5					$	3.8					$	4.0
Service cost			1.5						4.5						—						—
Interest cost			9.0						10.4						0.1						0.1
Actuarial loss (gain)			(10.7)						30.5						(0.6)						0.4
Settlements			—						—						(0.1)						(0.6)
Benefits paid			(14.4)						(13.0)						(0.3)						(0.5)
Curtailments			—						(5.1)						—						—
Plan combination (acquisitions/divestitures)			—						(6.8)						—						—
Other			(0.4)						0.7						0.2						0.4
Projected benefit obligations at end of year			335.7						350.7						3.1						3.8

Schedule of Change in Plan Assets

Change in Plan Assets
Fair value of plan assets at beginning of year			353.4						313.5
Actual return on plan assets			12.2						53.5
Administrative expenses			—						(0.7)
Benefits paid			(14.4)						(13.0)
Company contributions			0.3						4.4
Plan combination (acquisitions/divestitures)			—						(4.1)
Other			(0.1)						(0.2)
Fair value of plan assets at end of year			351.4						353.4

Schedule of Change in Plan Assets Underfunded Status at End of Year

Funded Status at End of Year $ 15.7  $ 2.7  $ (3.1) $ (3.8)

Schedule Of Projected Benefit Obligations Amounts Recognized In Consolidated Balance Sheets

			Pension Benefits												Other Benefits
			2021						2020						2021						2020
			(in millions)
Amounts Recognized in the Consolidated Balance Sheets
Long-term assets			$	28.6					$	16.8					$	—					$	—
Current liabilities			(0.9)						(0.5)						(0.1)						(0.3)
Long-term liabilities			(12.0)						(13.6)						(3.0)						(3.5)
			$	15.7					$	2.7					$	(3.1)					$	(3.8)

Schedule of Pre Tax Charges Recognized in Accumulated Other Comprehensive Income (Loss)

Pre-tax charges recognized in accumulated other comprehensive income (loss) as of December 31, 2021 and 2020 consist of:

			Pension Benefits												Other Benefits
			2021						2020						2021						2020
			(in millions)
Net actuarial (gain) loss			$	41.7					$	47.1					$	(0.4)					$	0.2
Prior service cost			0.9						0.6						—						—
			$	42.6					$	47.7					$	(0.4)					$	0.2

Schedule Of Net Periodic Benefit Cost

The following table sets forth the components of net periodic benefit cost and other changes in plan assets and benefit obligations recognized in other comprehensive income for our defined benefit pension and other non-qualified and postretirement plans for the years ended December 31, 2021, 2020 and 2019.

			Pension Benefits																		Other Benefits
			2021						2020						2019						2021						2020						2019
			(in millions)
Net Periodic Benefit Cost
Service cost			$	1.5					$	4.5					$	4.4					$	—					$	—					$	0.1
Interest cost			9.0						10.4						12.2						0.1						0.1						0.1
Expected return on plan assets			(18.3)						(18.9)						(15.7)						—						—						—
Amortization of prior service cost			0.1						0.1						0.2						—						—						0.2
Amortization of net loss			0.7						5.2						6.6						0.1						0.2						—
Settlements			—						—						—						—						(1.1)						—
Curtailments			—						0.3						—						—						—						—
Net periodic benefit cost			(7.0)						1.6						7.7						0.2						(0.8)						0.4

Schedule of Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income

			Pension Benefits																		Other Benefits
			2021						2020						2019						2021						2020						2019
			(in millions)
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income
Net loss (gain)			(4.7)						(7.8)						5.8						(0.5)						0.3						(0.1)
Prior service cost			0.4						(0.3)						0.5						—						—						—
Amortization of net loss			(0.7)						(5.2)						(6.6)						(0.1)						(0.2)						—
Amortization of prior service cost			(0.1)						(0.1)						(0.2)						—						—						(0.2)
Settlements			—						—						—						—						1.1						—
Curtailments			—						(0.3)						—						—						—						—
Total recognized in other comprehensive income			(5.1)						(13.7)						(0.5)						(0.6)						1.2						(0.3)
Total Recognized in Net Periodic Benefit Cost and Other Comprehensive Income			$	(12.1)					$	(12.1)					$	7.2					$	(0.4)					$	0.4					$	0.1

Schedule of Weighted Average Assumptions Used to Determine Benefit Obligations and Net Periodic Benefit Cost

			Pension Benefits																		Other Benefits
			2021						2020						2019						2021						2020						2019
Weighted-Average Assumptions Used to Determine Benefit Obligations at December 31
Discount rate			3.0		%				2.625		%				3.375		%				3.0		%				2.625		%				3.375		%
Rate of compensation increase			N/A						3.0		%				3.0		%				N/A						4.0		%				4.0		%
Weighted-Average Assumptions Used to Determine Net Periodic Benefit Cost for Years Ended December 31
Discount rate			2.625		%				3.375		%				4.38		%				2.625		%				3.375		%				4.38		%
Expected long-term return on plan assets			5.3		%				6.0		%				6.0		%				—						—						—
Rate of compensation increase			3.0		%				3.0		%				3.0		%				4.0		%				4.0		%				4.0		%

Schedule of Assumed Health Care Cost Trend Rates

We use the Pri-2012 base mortality table with the MP-2021 projection scale to value our domestic pension liabilities.

Assumed Health Care Cost Trend Rates at December 31			2021						2020
Health care cost trend rate assumed for next year			7.0		%				7.5		%
Rate to which the cost trend rate is assumed to decline (the ultimate rate)			4.5		%				4.5		%
Year that the rate reaches the ultimate trend rate			2027						2027

Schedule of Asset Allocation for Pension Plans and Target Allocation By Asset Category

The asset allocation for pension plans at the end of 2021 and 2020, and the target allocation for 2022, by asset category are as follows:

			Target Allocation						Plan Assets at December 31,
			2022						2021						2020
Asset Category
Equity securities			20		%				22		%				33		%
Fixed income			80		%				78		%				67		%
			100		%				100		%				100		%

Schedule of Fair Value of Plan Assets

The investment portfolios of the various funds at December 31, 2021 and 2020 are summarized as follows:

			2021						2020
			(in millions)
Mutual funds – U.S. equity			$	46.2					$	68.3
Mutual funds – international equity			30.6						46.9
Mutual funds - fixed income treasury and money market			273.5						237.0
Cash equivalents			1.1						1.2
			$	351.4					$	353.4

Schedule of Benefit Payments Reflecting Expected Future Service as Appropriate Expected to Be Paid

The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid in the following calendar years:

			Pension Benefits						Other Benefits
			(in millions)
2022			$	15.2					$	0.1
2023			15.8						1.8
2024			16.9						0.1
2025			18.1						0.1
2026			18.2						0.1
Years 2027 – 2031			98.1						0.5

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