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Pension and Other Post-Retirement Benefits
 12 Months Ended
Dec. 31, 2020
Retirement Benefits [Abstract]  
Pension and Other Post-Retirement Benefits Pension and Other Post-Retirement Benefits
We maintain both funded and unfunded noncontributory defined benefit pension plans covering our domestic employees and the employees of our subsidiaries. We also have a funded noncontributory defined benefit pension plan related to a former business in the United Kingdom that has no active employees. The plans base benefits payable on years of service and/or final average salary. We base our funding policies for the pension plans on actuarially determined cost methods allowable under IRS regulations and statutory requirements in the UK.

In addition to the pension plans, we have other post-retirement plans that provide health care, life insurance, and other benefits for certain retired domestic employees who meet established criteria. Most domestic employees that retire with immediate benefits under our pension plan are eligible for health care and life insurance benefits. The other post-retirement plans are either contributory or noncontributory, depending on various factors.

Certain lump sum distributions paid to retirees triggered settlement accounting, resulting in the recognition of $2.1 million of expense in 2018.

We use a December 31 measurement date for all of our plans. The following tables show pension obligations, plan assets, and other post-retirement obligations as of December 31 (in millions):
 


2020 Pension
Benefits 		2019 Pension
Benefits 		2020 Retiree
Health
and Life		2019 Retiree
Health
and Life
Change in Benefit Obligation
Benefit obligation at beginning of year
$475.4 $413.7 $24.6 $27.5 
Service cost
8.1 6.5 0.2 0.2 
Interest cost
12.3 15.2 0.5 0.9 
Actuarial loss (gain)
45.2 63.7 (0.2)(1.1)
Benefits paid
(33.4)(24.9)(2.2)(2.9)
Effect of foreign exchange rate changes
1.0 1.2 — — 
Benefit obligation at end of year
$508.6 $475.4 $22.9 $24.6 
Change in Fair Value of Plan Assets
Plan assets at beginning of year
432.7 369.8 — — 
Actual return on plan assets
61.4 84.6 — — 
Effect of exchange rate changes
1.2 1.3 — — 
Company contributions
3.6 1.9 2.2 2.9 
Benefits paid
(33.4)(24.9)(2.2)(2.9)
Plan assets at end of year
$465.5 $432.7 $— $— 
Funded Status at end of year
$(43.1)$(42.7)$(22.9)$(24.6)
Amount Recognized
Other liabilities and other assets (net)
$(43.1)$(42.7)$(22.9)$(24.6)
Accumulated other comprehensive loss (income):
Net actuarial loss (gain)
109.9 118.5 (3.0)(3.1)
Prior service credit
— — (1.0)(1.2)
Accumulated other comprehensive loss (income)
109.9 118.5 (4.0)(4.3)
Total recognized
$66.8 $75.8 $(26.9)$(28.9)
After-tax amount recognized in accumulated other comprehensive loss (gain)
$82.2 $88.6 $(3.0)$(3.2)

The aggregate accumulated benefit obligation for the defined benefit pension plans was $481.6 million at December 31, 2020 and $450.5 million at December 31, 2019.
The following table shows our pension plans that have a projected benefit obligation in excess of plan assets as of December 31 (in millions):
20202019
Projected benefit obligations$380.7 $354.1 
Fair value of plan assets321.6 300.4 

The following table shows our pension plans that have an accumulated benefit obligation in excess of plan assets as of December 31 (in millions):
20202019
Accumulated benefit obligations$41.7 $37.0 
Fair value of plan assets— — 

The following table shows the components of net periodic cost (benefit) for the years ended December 31 (in millions):




2020
Pension
Benefits 		2019
Pension
Benefits 		2018
Pension
Benefits 		2020
Retiree Health and Life		2019
Retiree Health and Life		2018
Retiree Health and Life
Service cost
$8.1 $6.5 $8.2 $0.2 $0.2 $0.2 
Interest cost
12.3 15.2 14.7 0.5 0.9 1.0 
Expected return on plan assets
(20.4)(22.0)(22.2)— — — 
Settlement expense
— — 2.1 — — — 
Amortization of:
Unrecognized prior service credit
— — — (0.2)(0.2)(0.1)
Unrecognized net actuarial loss (gain)
12.7 7.9 10.0 (0.4)(0.1)— 
Net periodic cost
$12.7 $7.6 $12.8 $0.1 $0.8 $1.1 

The service cost component of net period cost is recorded in selling, general and administrative expense in the statements of comprehensive income, and the non-service components are recorded in other expense.

We amortize the unrecognized prior service credit using a straight-line method over the average remaining service period of the employees we expect to receive benefits under the plan. We amortize the unrecognized net actuarial loss (gain), which is subject to certain averaging conventions, over the average remaining service period of active employees.
We use the following assumptions to measure the benefit obligation, compute the expected long-term return on assets, and measure the periodic cost for our defined benefit pension plans and other post-retirement benefit plans for the years ended December 31:
20202019
Domestic defined benefit pension plans
Benefit Obligation at December 31:
Discount rate — salaried funded plans2.42 %3.17 %
Discount rate — salaried unfunded plans1.19% - 2.35%2.45% - 3.12%
Discount rate — hourly funded plan2.73 %3.35 %
Cash balance interest crediting rate — salaried funded plan3.09 %3.09 %
Rate of compensation increases — salaried funded and unfunded plans3.00 %3.00 %
Rate of compensation increases — hourly funded plansn/an/a
Net Periodic Cost (Benefit) for the years ended December 31:
Discount rate — salaried funded and unfunded plans3.17 %4.32 %
Discount rate — hourly funded plan3.35 %4.43 %
Expected return on plan assets — salaried funded plan5.60 %6.20 %
Expected return on plan assets — hourly funded plan5.30 %6.00 %
Rate of compensation increases — salaried funded and unfunded plans3.00 %3.00 %
Rate of compensation increases — hourly funded plann/an/a
Foreign defined benefit pension plan
Benefit Obligation at December 31:
Discount rate1.20 %1.90 %
Rate of pension-in-payment increases2.90 %3.00 %
Net Periodic Cost (Benefit) for the years ended December 31:
Discount rate1.90 %2.60 %
Expected return on plan assets3.60 %4.00 %
Rate of pension-in-payment increases3.00 %3.20 %
Other post-retirement benefit plans
Benefit Obligation at December 31:
Discount rate - combined health1.93 %2.88 %
Discount rate - combined life insurance2.46 %3.19 %
Rate of compensation increasesn/an/a
Net Periodic Cost (Benefit) for the years ended December 31:
Discount rate - combined health2.85 %4.05 %
Discount rate - combined life insurance3.19 %4.32 %
Rate of compensation increasesn/an/a
We calculate the present value of expected future pension and post-retirement cash flows as of the measurement date using a discount rate. We base the discount rate on yields for high-quality, long-term bonds with durations similar to that of our projected benefit obligation. We base the expected return on our plan assets on current and expected asset allocations, as well as historical and expected returns on various categories of plan assets. We routinely review our historical returns along with current market conditions to ensure our expected return assumption is reasonable and appropriate.
20202019
Assumed Health Care Cost Trend Rates at December 31:
Health care cost trend assumed for next year
Medical claims - pre age 656.44 %6.40 %
Medical claims - post age 655.63 %5.60 %
Prescription drugs claims - pre age 658.78 %8.80 %
Prescription drugs claims - post age 658.63 %8.60 %
Rate to which the cost trend is expected to decline (the ultimate trend rate)
Medical claims4.50 %4.50 %
Prescription drugs claims4.50 %4.50 %
Year that rate reaches the ultimate trend rate
Medical claims20282028
Prescription drugs claims20282028

Our investment policies require that asset allocations of domestic and foreign funded pension plans be maintained at certain targets. The following table shows our weighted-average asset allocations of our domestic funded pension plans at December 31, 2020 and 2019, and current target asset allocation for 2021, by asset category:
  
Plan Assets for Salaried Employees at
December 31
Target20202019
Asset Category
Equity securities53.0 %54.6 %46.6 %
Debt securities43.0 %41.4 %48.5 %
Real estate4.0 %2.9 %3.4 %
Cash— %1.1 %1.5 %
100.0 %100.0 %100.0 %

 
 
Plan Assets for Hourly Employees at
December 31
Target20202019
Asset Category
Equity securities31.8 %33.7 %30.5 %
Debt securities65.0 %62.8 %65.1 %
Real estate3.2 %2.5 %3.2 %
Cash— %1.0 %1.2 %
100.0 %100.0 %100.0 %
The following table shows the weighted-average asset allocations of our foreign funded pension plan at December 31, 2020 and 2019, and current target asset allocation for 2021, by asset category:
 
 
Plan Assets at
December 31
Target20202019
Asset Category
Equity securities36.8 %30.7 %33.4 %
Debt securities63.2 %69.3 %66.6 %
100.0 %100.0 %100.0 %

The following table sets forth the fair value of our pension plan assets as of December 31 (in millions):
20202019
Assets measured at net asset value (1):
Short-term investment collective trust fund
$4.6 $5.9 
Common stock collective trust funds
223.0 181.3 
Fixed income collective trust funds
226.0 232.4 
Real estate collective trust funds
11.9 13.1 
Total
$465.5 $432.7 
_______
(1)     In accordance with the relevant accounting standards, investments measured at fair value using the net asset value per share (or its equivalent) practical expedient are not recorded in any specific category of the fair value hierarchy.

The following is a description of the valuation techniques and inputs used as of December 31, 2020 and 2019.

Short-term investment collective trust fund

We value the short-term investment collective trust fund based on the closing net asset values ("NAV") quoted by the funds. The short-term investment fund is a highly liquid investment in obligations of the U.S. Government, or its agencies or instrumentalities, and the related money market instruments. The short-term investment fund has no unfunded commitments, restrictions on redemption frequency, or advance notice periods required for redemption. The fund seeks to provide safety of principal, daily liquidity, and a competitive yield over the long term.

Common stock collective trust funds and fixed income collective trust funds

We value common stock collective trust funds and fixed income collective trust funds based on the closing NAV prices quoted by the funds. None of the collective trust funds have unfunded commitments, restrictions on redemption frequency, or advance notice periods required for redemption. The investment objective of each of the common stock funds is long-term total return through capital appreciation and current income. The fixed income funds are each designed to deliver safety and stability by preserving principal and accumulated earnings. The fixed income fund seeks to achieve, over an extended period of time, total returns comparable or superior to broad measures of the long-term domestic investment grade credit bond market.

Real estate collective trust funds

We value real estate collective trust funds based on the NAV provided by the funds' administrators. A lack of liquidity in the funds may limit or delay redemptions. The investment objective of the real estate funds, which are diversified by location and property type, is long-term return through property appreciation, current income, and timely sales.

The primary investing objective of the pension plans is to provide benefits to plan participants and their beneficiaries. To achieve this goal, we invest in a diversified portfolio of equities, debt, and real estate investments to maximize return and to keep long-term investment risk at a reasonable level. Equity investments are diversified across U.S. and non-U.S. stocks, growth and value stocks, and small cap and large cap stocks. Debt securities are predominately investments in long-term, investment-grade corporate bonds. Real estate investments include investments in funds that are diversified by location and property type.
On a timely basis, but not less than twice a year, we formally review pension plan investments to ensure we adhere to investment guidelines and our stated investment approach. Our review also evaluates the reasonableness of our investment decisions and risk positions. We compare our investments' performance to indices and peers to determine if investment performance has been acceptable.

In 2021, we expect to contribute approximately $5.7 million to our pension and other post-retirement benefit plans. Additional contributions to the domestic funded pension plans will depend on investment returns on plan assets and actuarial experience.

The following table shows benefit payments, which reflect expected future service (in millions):

Funded PlansUnfunded PlansRetiree Health and Life
2021$30.3 $3.4 $2.3 
202229.6 3.7 2.2 
202328.8 3.8 2.0 
202429.9 3.8 1.8 
202529.6 3.8 1.7 
Years 2026-2030134.6 17.5 6.7 
Total$282.8 $36.0 $16.7 

In addition to our defined benefit plans, we have two 401(k) retirement savings plans available to substantially all salaried employees and certain other employee groups. We may contribute to the plans as specified by their respective terms and as our Board of Directors determines. Contributions to our 401(k) retirement plans were $2.3 million for 2020, $2.3 million for 2019, and $2.2 million for 2018.