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v3.23.3

Non-operating Income (Expense) (Notes) | 9 Months Ended
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Sep. 30, 2023
Nonoperating Income (Expense) [Abstract] |
Other Nonoperating Income and Expense [Text Block] | Non-Operating Expense The components of “Non-operating expense” in the Consolidated Statements of Operations for the quarter and nine months ended September 30, 2023 and 2022 are reflected in the table below:
| Quarter Ended September 30, |  | Nine Months Ended September 30,
| 2023 | 2022 |  | 2023 | 2022
Interest expense | $ | (7.4) |  | $ | (8.0) |  |  | $ | (22.6) |  | $ | (26.6) |
Amortization of deferred debt costs | (0.3) |  | (0.4) |  |  | (0.9) |  | (1.2) |
Interest income | 0.9 |  | 0.3 |  |  | 1.5 |  | 0.4 |
Interest expense, net | (6.9) |  | (8.0) |  |  | (22.0) |  | (27.3) |
Debt retirement costs | — |  | — |  |  | — |  | (0.5) |
Non-operating pension and other postretirement employee benefits (expense) | 0.1 |  | (1.4) |  |  | 0.3 |  | (4.3) |
Total non-operating expense | $ | (6.8) |  | $ | (9.4) |  |  | $ | (21.7) |  | $ | (32.1) |

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- Definition The entire disclosure for the components of non-operating income or non-operating expense, including, but not limited to, amounts earned from dividends, interest on securities, gain (loss) on securities sold, equity earnings of unconsolidated affiliates, gain (loss) on sales of business, interest expense and other miscellaneous income or expense items. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(7)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(9)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 + Details
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