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v3.23.3

Pension and Other Postretirement Benefits (Tables) | 9 Months Ended
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Sep. 30, 2023
Retirement Benefits [Abstract] |
Schedule of Net Benefit Costs [Table Text Block] | The components of net periodic pension and retiree medical income were as follows (in millions):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2023 |  | 2022 |  | 2023 |  | 2022
Interest cost | $ | 7.9 |  |  | $ | 5.7 |  |  | $ | 23.4 |  |  | $ | 16.8 |
Expected return on plan assets | (7.9) |  |  | (9.7) |  |  | (23.4) |  |  | (28.8) |
Amortization of net gain | (0.1) |  |  | — |  |  | (0.3) |  |  | (0.1) |
Net periodic pension and retiree medical income (1) | $ | (0.1) |  |  | $ | (4.0) |  |  | $ | (0.3) |  |  | $ | (12.1) |
(1)Included in Other, net, in our Condensed Consolidated Statements of Operations.

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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 715 -SubTopic 20 -Subparagraph (h) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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