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v3.23.3

Employee Retirement Plans (Tables) | 9 Months Ended
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Sep. 30, 2023
Retirement Benefits [Abstract] |
Retirement plan expense | Total employee retirement plan expense, which includes related administrative expenses, is as follows:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2023 |  | 2022 |  | 2023 |  | 2022
| (in millions)
Defined contribution plans | $ | 3.9 |  |  | $ | 3.4 |  |  | $ | 11.6 |  |  | $ | 10.2 |
Multiemployer plan | 0.4 |  |  | 0.4 |  |  | 1.2 |  |  | 1.2 |
| $ | 4.3 |  |  | $ | 3.8 |  |  | $ | 12.8 |  |  | $ | 11.4 |

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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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