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Defined Benefit Pension Plans and Other Post-Employment Benefit Plans - Schedule of Components of Net Periodic Benefit Cost (Income) for Defined Benefit Pension Plans (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] |  |  |  |
Service cost | $ 0.9 | $ 1.0 | $ 1.7 | $ 1.9
Interest cost | 6.3 | 6.9 | 12.6 | 13.6
Expected return on plan assets | (7.7) | (7.5) | (15.2) | (15.0)
Amortization of net prior service cost |  |  | 0.1 | 0.1
Amortization of net actuarial loss | 1.2 | 1.4 | 2.5 | 2.8
Net periodic benefit cost | 0.7 | 1.8 | 1.7 | 3.4
Settlement income | 0.0 | 0.0 | (0.1) | 0.0
Total benefit cost | 0.7 | 1.8 | 1.6 | 3.4
U.S. |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] |  |  |  |
Service cost | 0.0 | 0.0 | 0.0 | 0.0
Interest cost | 1.6 | 1.7 | 3.2 | 3.3
Expected return on plan assets | (1.9) | (1.8) | (3.7) | (3.5)
Amortization of net prior service cost |  |  | 0.0 | 0.0
Amortization of net actuarial loss | 0.4 | 0.4 | 0.8 | 0.8
Net periodic benefit cost | 0.1 | 0.3 | 0.3 | 0.6
Settlement income | 0.0 | 0.0 | 0.0 | 0.0
Total benefit cost | 0.1 | 0.3 | 0.3 | 0.6
International |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] |  |  |  |
Service cost | 0.9 | 1.0 | 1.7 | 1.9
Interest cost | 4.7 | 5.2 | 9.4 | 10.3
Expected return on plan assets | (5.8) | (5.7) | (11.5) | (11.5)
Amortization of net prior service cost |  |  | 0.1 | 0.1
Amortization of net actuarial loss | 0.8 | 1.0 | 1.7 | 2.0
Net periodic benefit cost | 0.6 | 1.5 | 1.4 | 2.8
Settlement income | 0.0 | 0.0 | (0.1) | 0.0
Total benefit cost | $ 0.6 | $ 1.5 | $ 1.3 | $ 2.8

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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan. + 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 45 -Paragraph 3A -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480535/715-20-45-3A Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480482/715-20-55-18 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (h)(4) -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 6 -Subparagraph (a)(4) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-6 + Details
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- Definition Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan. + 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 45 -Paragraph 3A -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480535/715-20-45-3A Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480482/715-20-55-18 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (h)(3) -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 6 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-6 + Details
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