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Pension and Other Postretirement Benefits (Tables)
12 Months Ended
Dec. 31, 2021
Retirement Benefits [Abstract]  
Summary of Weighted Average Assumptions Used
The following table summarizes the weighted-average assumptions used to determine the benefit obligations at December 31 for the U.S. Plans:
Pensions and Other Benefits
December 31,
20212020
Discount rate qualified2.84 %2.49 %
Discount rate nonqualified plan2.18 %1.62 %
Discount rate other benefits2.39 %1.91 %
Rate of compensation increase3.10 %3.10 %
Schedule of Benefit Obligations in Excess of Fair Value of Plan Assets
(in Millions)December 31
Information for pension plans with projected benefit obligation in excess of plan assets20212020
Projected benefit obligations$36.2 $42.9 
Accumulated benefit obligations36.2 43.3 
Fair value of plan assets3.8 7.7 
Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets
(in Millions)December 31
Information for pension plans with accumulated benefit obligation in excess of plan assets20212020
Projected benefit obligations$36.2 $42.9 
Accumulated benefit obligations36.2 43.3 
Fair value of plan assets3.8 7.7 
Changes in Plan Assets and Benefit Obligations for Continuing Operations Recognized in Other Comprehensive Loss (Income)
Other changes in plan assets and benefit obligations for continuing operations recognized in other comprehensive loss (income) are as follows:
 Pensions
Other Benefits (1)
 Year Ended December 31,
(in Millions)2021202020212020
Current year net actuarial loss (gain)$18.4 $(23.5)$(0.6)$0.4 
Amortization of net actuarial (loss) gain(23.4)(21.3)0.8 0.9 
Amortization of prior service (cost) credit(0.2)(0.2)— — 
Settlement loss(1.0)(0.6)— — 
Total recognized in other comprehensive (income) loss, before taxes$(6.2)$(45.6)$0.2 $1.3 
Total recognized in other comprehensive (income) loss, after taxes(5.0)(36.5)0.2 1.0 
____________________
(1)     Refer to Note 11 to the consolidated financial statements included within this Form 10-K for information on our discontinued postretirement benefit plans.
Weighted-Average Assumptions Used for and Components of Net Annual Benefit Cost (Income)
The following table summarizes the weighted-average assumptions used for and the components of net annual benefit cost (income):
 Year Ended December 31,
 Pensions
Other Benefits (1)
(in Millions, except for percentages)202120202019202120202019
Discount rate 2.49 %3.22 %4.36 %1.91 %2.89 %4.08 %
Expected return on plan assets2.25 %3.00 %4.25 %— — — 
Rate of compensation increase3.10 %3.10 %3.10 %— — — 
Components of net annual benefit cost:
Service cost$4.7$4.4$4.2$$$
Interest cost24.536.747.60.30.40.6
Expected return on plan assets(28.2)(37.1)(53.4)
Amortization of prior service cost0.20.20.20.1
Amortization of net actuarial and other (gain) loss23.221.412.9(0.8)(0.9)(1.0)
Recognized (gain) loss due to settlement1.00.71.4
Net annual benefit cost (income)$25.4$26.3$12.9$(0.5)$(0.5)$(0.3)
___________________
(1)     Refer to Note 11 to the consolidated financial statements included within this Form 10-K for information on our discontinued postretirement benefit plans.
Fair Value of Pension Plan Assets by Asset Class
The following tables present our fair value hierarchy for our major categories of pension plan assets by asset class. See Note 19 to the consolidated financial statements included within this Form 10-K for the definition of fair value and the descriptions of Level 1, 2 and 3 in the fair value hierarchy.
(in Millions)December 31, 2021
Quoted Prices
in Active
Markets for
Identical
Assets
(Level 1)
Significant
Other
Observable
Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
Cash and short-term investments$32.7 $32.2 $0.5 $— 
Fixed income investments:
Investment contracts144.7 — 144.7 — 
U.S. Government Securities309.5 309.5 — — 
Mutual funds41.5 41.5 — — 
Corporate debt instruments843.6 — 843.6 — 
Total assets$1,372.0 $383.2 $988.8 $ 
(in Millions)December 31, 2020Quoted Prices
in Active
Markets for
Identical
Assets
(Level 1)
Significant
Other
Observable
Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
Cash and short-term investments$24.7 $24.6 $0.1 $— 
Fixed income investments:
Investment contracts151.4 — 151.4 — 
U.S. Government Securities 307.0 297.9 9.1 — 
Mutual funds 70.5 70.5 — — 
Corporate debt instruments931.0 — 931.0 — 
Total assets$1,484.6 $393.0 $1,091.6 $ 
Contributions to Pension and Other Postretirement Benefit Plans
We made the following contributions to our pension and other postretirement benefit plans:
  
Year Ended December 31,
(in Millions)20212020
U.S. qualified pension plan$— $— 
U.S. nonqualified pension plan3.8 2.9 
Non-U.S. plans0.2 0.5 
Other postretirement benefits1.3 1.2 
Total$5.3 $4.6 
Estimated Net Future Benefit Payments
The following table reflects the estimated future benefit payments for our pension and other postretirement benefit plans. These estimates take into consideration expected future service, as appropriate:
Estimated Net Future Benefit Payments
(in Millions)202220232024202520262027 - 2031
Pension Benefits$86.8 $86.4 $86.8 $85.1 $85.1 $397.3 
Other Benefits1.6 1.5 1.4 1.3 1.2 4.6