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v3.22.2.2

EMPLOYEE BENEFITS | 9 Months Ended
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Sep. 30, 2022
Retirement Benefits [Abstract] |
EMPLOYEE BENEFITS | EMPLOYEE BENEFITS The following tables show the components of net periodic benefit cost (credit) for our benefit plans.
|  | Pension Benefits
|  | Three Months Ended September 30 |  | Nine Months Ended September 30
(in millions) |  | 2022 |  | 2021 |  | 2022 |  | 2021
Service cost |  | $ | 12.3 |  |  | $ | 13.3 |  |  | $ | 38.9 |  |  | $ | 40.8 |
Interest cost |  | 23.2 |  |  | 22.2 |  |  | 68.4 |  |  | 65.8 |
Expected return on plan assets |  | (51.6) |  |  | (50.1) |  |  | (156.8) |  |  | (150.8) |
Loss on plan settlement |  | 1.1 |  |  | 0.9 |  |  | 3.3 |  |  | 2.9 |
Amortization of prior service cost |  | 0.4 |  |  | 0.4 |  |  | 1.2 |  |  | 1.2 |
Amortization of net actuarial loss |  | 19.0 |  |  | 26.4 |  |  | 57.2 |  |  | 82.0 |
Net periodic benefit cost |  | $ | 4.4 |  |  | $ | 13.1 |  |  | $ | 12.2 |  |  | $ | 41.9 |
|  | OPEB Benefits
|  | Three Months Ended September 30 |  | Nine Months Ended September 30
(in millions) |  | 2022 |  | 2021 |  | 2022 |  | 2021
Service cost |  | $ | 3.6 |  |  | $ | 4.0 |  |  | $ | 10.7 |  |  | $ | 11.8 |
Interest cost |  | 3.8 |  |  | 3.7 |  |  | 11.5 |  |  | 10.9 |
Expected return on plan assets |  | (17.2) |  |  | (16.5) |  |  | (51.7) |  |  | (49.5) |
Amortization of prior service credit |  | (4.0) |  |  | (4.1) |  |  | (11.9) |  |  | (12.0) |
Amortization of net actuarial gain |  | (6.2) |  |  | (5.9) |  |  | (18.5) |  |  | (18.1) |
Net periodic benefit credit |  | $ | (20.0) |  |  | $ | (18.8) |  |  | $ | (59.9) |  |  | $ | (56.9) |
During the nine months ended September 30, 2022, we made contributions and payments of $8.4 million related to our pension plans and $3.2 million related to our OPEB plans. We expect to make contributions and payments of $2.8 million related to our pension plans during the remainder of 2022, dependent upon various factors affecting us, including our liquidity position and possible tax law changes. We do not expect to make any contributions or payments related to our OPEB plans during the remainder of 2022.

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