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Pension Plans and Other Benefits - Changes in Defined Benefit Obligations and Plan Assets (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Change in projected benefit obligation: |  |  |
Benefit obligation at beginning of period | $ 299.5 |  |
Defined Benefit Plan, Service Cost | 0.1 | $ 0.1 |
Projected benefit obligation at end of period |  | 299.5 |
Change in plan assets: |  |  |
Fair value at beginning of period | 345.6 |  |
Company contribution | 0.1 | 0.2 |
Fair value at end of period | 157.1 | 345.6 |
Funded status of the plans as of the end of period | 18.6 |  |
Amounts recognized in the consolidated balance sheets: |  |  |
Noncurrent liabilities | (119.7) | (103.3) |
Amounts recognized in accumulated other comprehensive (income) loss |  |  |
Prior service cost | (13.2) | (14.1) |
Accumulated benefit obligation for the defined benefit pension plans | 119.6 | 299.1 |
Pension Settlement | $ (42.4) | (41.9) | $ 0.0
Fixed Income Securities |  |  |
Amounts recognized in accumulated other comprehensive (income) loss |  |  |
Allocation percentage | 75.00% |  |
Equity Securities |  |  |
Amounts recognized in accumulated other comprehensive (income) loss |  |  |
Allocation percentage | 20.00% |  |
Cash |  |  |
Amounts recognized in accumulated other comprehensive (income) loss |  |  |
Allocation percentage | 5.00% |  |
North American Pension Plan |  |  |
Change in projected benefit obligation: |  |  |
Benefit obligation at beginning of period | $ 294.3 | 739.6 |
Defined Benefit Plan, Service Cost | 2.8 | 4.2 |
Defined Benefit Plan, Interest Cost | 11.1 | 16.8 |
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) | 3.3 | (158.8) |
Defined Benefit Plan, Benefit Obligation, Foreign Currency Translation Gain (Loss) | 2.0 | (19.0) |
Benefits paid and transfers | (190.4) | (322.2) |
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment | 5.8 | 0.0 |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment | (9.3) | 38.9 |
Projected benefit obligation at end of period | 119.6 | 294.3 | 739.6
Change in plan assets: |  |  |
Fair value at beginning of period | 329.0 | 807.0 |
Currency fluctuations | 2.9 | (21.3) |
Actual return | 11.4 | (124.9) |
Company contribution | 4.2 | 7.0 |
Benefits paid and transfers | (190.4) | (322.2) |
Fair value at end of period | 157.1 | 329.0 | $ 807.0
Funded status of the plans as of the end of period | 37.5 | 46.1 |
Amounts recognized in the consolidated balance sheets: |  |  |
Noncurrent assets | 43.8 | 52.9 |
Current liabilities | (0.5) | (0.5) |
Noncurrent liabilities | (5.8) | (6.3) |
Amounts recognized in accumulated other comprehensive (income) loss |  |  |
Prior service cost | 15.1 | 10.9 |
Actuarial loss | 20.0 | 67.2 |
Pension Settlement | (42.4) | (41.9) |
2020 | 3.9 |  |
The amount of estimated cash contribution to the defined benefit pension plans needed next fiscal year to meet minimum funding requirements | 0.8 |  |
North American Pension Plan | North America |  |  |
Change in projected benefit obligation: |  |  |
Benefit obligation at beginning of period | 5.2 |  |
Projected benefit obligation at end of period | 0.0 | 5.2 |
Change in plan assets: |  |  |
Fair value at beginning of period | 16.6 |  |
Fair value at end of period | $ 18.6 | $ 16.6 |

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- Definition Amount, before tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -Publisher FASB -URI https://asc.fasb.org//1943274/2147482790/220-10-45-14A Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (j) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Amount, before tax, of accumulated other comprehensive (income) loss for cost (credit) of benefit change attributable to participants' prior service from plan amendment or plan initiation of defined benefit plan, that has not been recognized in net periodic benefit cost (credit). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -Publisher FASB -URI https://asc.fasb.org//1943274/2147482790/220-10-45-14A Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (j) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Amount of increase (decrease) in plan assets of defined benefit plan from actual return (loss) determined by change in fair value of plan assets adjusted for contributions, benefit payments, and other expenses. + References Reference 1: 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 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 60 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480266/715-60-50-4 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(6) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk related to obligation and assets used to effect settlement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 3A -Publisher FASB -URI https://asc.fasb.org//1943274/2147480535/715-20-45-3A Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (h)(7) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a)(7) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-6 + Details
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