Three Months Ended

Six Months Ended

June 30,

June 30,

2022

2021

2022

2021

U.S. defined benefit plans:

Pension benefits

Service cost of benefits earned during the period

$

0.9

$

1.2

$

1.8

$

2.4

Interest cost on projected benefit obligation

2.6

2.3

5.3

4.5

Expected return on plan assets

(4.6

)

(4.2

)

(9.2

)

(8.3

)

Amortization of net actuarial loss

1.1

0.9

2.1

1.8

Net periodic pension cost

$

-

$

0.2

$

-

$

0.4

Retiree health and life insurance benefits

Interest cost on projected benefit obligation

$

0.3

$

0.3

$

0.7

$

0.6

Amortization of prior service credit

-

-

(0.1

)

(0.1

)

Amortization of net actuarial gain

(0.7

)

(0.6

)

(1.4

)

(1.1

)

Net periodic postretirement (credit)

$

(0.4

)

$

(0.3

)

$

(0.8

)

$

(0.6

)