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v3.23.3

Employee Retirement Plans (Tables) | 9 Months Ended
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Sep. 30, 2023
Retirement Benefits [Abstract] |
Schedule of Costs of Retirement Plans [Table Text Block] | Amounts related to our employee retirement plans are as follows:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2023 |  | 2022 |  | 2023 |  | 2022
| (in millions)
Defined contribution expense | $ | 2.5 |  |  | $ | 2.5 |  |  | $ | 7.5 |  |  | $ | 6.8 |
Net periodic benefit cost – Supplemental Executive Retirement Plan (1) | $ | 0.2 |  |  | $ | 0.2 |  |  | $ | 0.5 |  |  | $ | 0.5 |
(1) The non-service cost components of net periodic benefit cost are included in other, net (income) expense in our Consolidated Statements of Operations.

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- Definition Tabular disclosure of the costs related to the various types of retirement plans including defined benefit pension plan cost, defined contribution plan cost, other postretirement benefit plan cost, and net periodic benefit cost. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 20 -Topic 715 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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