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v3.21.1

Employee Benefit Plans (Notes) | 3 Months Ended
--- | ---
Mar. 31, 2021
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract] |
Pension and Other Postretirement Benefits Disclosure [Text Block] | 8. EMPLOYEE BENEFIT PLANS The components of net periodic benefit cost (credit) are as follows:
|  |  |  |  |  | Pension Benefits
|  |  |  | Three Months Ended
|  |  |  | March 31,
|  |  |  |  |  | 2021 |  | 2020
|  |  |  |  |  | (in millions)
Service cost |  |  |  |  |  | $ | 0.5 |  |  | $ | 0.5 |
Interest cost |  |  |  |  |  | 4.3 |  |  | 5.4 |
Expected asset return |  |  |  |  |  | (9.7) |  |  | (9.6) |
Amortized loss |  |  |  |  |  | 2.7 |  |  | 2.1 |
Net periodic benefit credit |  |  |  |  |  | $ | (2.2) |  |  | $ | (1.6) |
|  |  |  |  |  | Other Postretirement Benefits
|  |  |  | Three Months Ended
|  |  |  | March 31,
|  |  |  |  |  | 2021 |  | 2020
|  |  |  |  |  | (in millions)
Service cost |  |  |  |  |  | $ | 0.1 |  |  | $ | 0.1 |
Interest cost |  |  |  |  |  | 2.1 |  |  | 2.6 |
Amortized loss |  |  |  |  |  | 0.4 |  |  | 0.2 |
Amortized prior service credit |  |  |  |  |  | (0.4) |  |  | (0.4) |
Net periodic benefit cost |  |  |  |  |  | $ | 2.2 |  |  | $ | 2.5 |
The noncurrent liabilities associated with our pension and other postretirement benefit plans are classified as Postretirement benefits and other long-term liabilities on our Condensed Consolidated Balance Sheets. As of March 31, 2021 and December 31, 2020, we have a noncurrent pension liability of $134.5 million and $141.2 million, respectively. As of March 31, 2021 and December 31, 2020, we have a noncurrent other postretirement benefits liability of $554.2 million and $556.7 million, respectively. Due to the availability of our pre-funded pension balances (previous contributions in excess of prior required pension contributions), we expect our regulatory pension funding requirements in 2021 to be less than $1 million. We expect our cash payments for other postretirement benefit obligations in 2021, net of GM cost sharing, to be approximately $17 million.

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