XML 31 R20.htm IDEA: XBRL DOCUMENT
v3.23.3

Components of Net Periodic Benefit Cost | 9 Months Ended
--- | ---
Sep. 30, 2023
Retirement Benefits [Abstract] |
Components of Net Periodic Benefit Cost | Components of Net Periodic Benefit Cost
|  | Pension Benefits
|  | Three months ended September 30, |  | Nine months ended September 30,
|  | 2023 |  | 2022 |  | 2023 |  | 2022
Service cost |  | $ | 0.6 |  |  | $ | 1.1 |  |  | $ | 1.7 |  |  | $ | 3.2 |
Interest cost |  | 3.5 |  |  | 2.6 |  |  | 10.5 |  |  | 7.7 |
Expected return on plan assets |  | (3.8) |  |  | (5.9) |  |  | (11.3) |  |  | (17.6) |
Amortization of prior service costs |  | — |  |  | 0.0 |  |  | 0.1 |  |  | 0.1 |
Amortization of net loss |  | 1.7 |  |  | 0.9 |  |  | 4.9 |  |  | 2.6 |
Net periodic benefit cost (income) |  | $ | 2.0 |  |  | $ | (1.3) |  |  | $ | 5.9 |  |  | $ | (4.0) |
|  | Other Postretirement Benefits
|  | Three months ended September 30, |  | Nine months ended September 30,
|  | 2023 |  | 2022 |  | 2023 |  | 2022
Service cost |  | $ | — |  |  | $ | — |  |  | $ | 0.1 |  |  | $ | 0.1 |
Interest cost |  | 1.0 |  |  | 0.9 |  |  | 2.9 |  |  | 2.2 |
Amortization of prior service cost |  | — |  |  | (0.3) |  |  | — |  |  | (1.3) |
Amortization of net loss |  | 0.0 |  |  | 0.2 |  |  | 0.1 |  |  | 1.0 |
Curtailment gain, net |  | — |  |  | (8.0) |  |  | — |  |  | (8.0) |
Net periodic benefit cost |  | $ | 1.0 |  |  | $ | (7.2) |  |  | $ | 3.1 |  |  | $ | (6.0) |

X
- References No definition available. + Details
Name: | us-gaap_CompensationAndRetirementDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for retirement benefits. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 70 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480794/715-70-50-1 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-17 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(03) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(i) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (q) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (l) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//715/tableOfContent Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (o) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (p) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (r)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (r)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480126/715-20-S99-2 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 60 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480266/715-60-50-3 + Details
Name: | us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration