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Accumulated Other Comprehenive Income (Loss) | 9 Months Ended
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Sep. 30, 2025
Accumulated Other Comprehensive Income (Loss) [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] | The following table sets forth the changes in AOCI, net of tax, by component during the three and nine months ended September 30, 2025 and September 30, 2024:
| Foreign Currency Translation Gain (Loss) |  | Net Actuarial Gain and Prior Service Cost |  | Amortization of Gain on Interest Rate Swap |  | Net Gain (Loss) on Marketable Securities Held in Trust |  | Total
Three Months Ended September 30, 2025 |  |  |  |  |  |  |  |  |
Balance at June 30, 2025 | $ | (2,075.2) |  |  | $ | (22.9) |  |  | $ | 8.0 |  |  | $ | 1.0 |  |  | $ | (2,089.1) |
Other comprehensive income (loss) | (4.8) |  |  | 0.3 |  |  | (0.1) |  |  | 7.5 |  |  | 2.9 |
Tax (expense) benefit | — |  |  | (2.0) |  |  | — |  |  | (1.7) |  |  | (3.7) |
Other comprehensive income (loss), net of tax | (4.8) |  |  | (1.7) |  |  | (0.1) |  |  | 5.8 |  |  | (0.8) |
Other comprehensive income (loss) attributable to noncontrolling interest | (0.7) |  |  | — |  |  | — |  |  | — |  |  | (0.7) |
Balance as of September 30, 2025 | $ | (2,080.7) |  |  | $ | (24.6) |  |  | $ | 7.9 |  |  | $ | 6.8 |  |  | $ | (2,090.6) |
Three Months Ended September 30, 2024 |  |  |  |  |  |  |  |  |
Balance at June 30, 2024 | $ | (2,193.2) |  |  | $ | (31.6) |  |  | $ | 8.1 |  |  | $ | (12.7) |  |  | $ | (2,229.4) |
Other comprehensive income (loss) | 101.6 |  |  | 1.1 |  |  | — |  |  | 17.7 |  |  | 120.4 |
Tax (expense) benefit | 3.0 |  |  | (0.7) |  |  | — |  |  | (4.0) |  |  | (1.7) |
Other comprehensive income (loss), net of tax | 104.6 |  |  | 0.4 |  |  | — |  |  | 13.7 |  |  | 118.7 |
Other comprehensive income (loss) attributable to noncontrolling interest | (0.5) |  |  | — |  |  | — |  |  | — |  |  | (0.5) |
Balance as of September 30, 2024 | $ | (2,089.1) |  |  | $ | (31.2) |  |  | $ | 8.1 |  |  | $ | 1.0 |  |  | $ | (2,111.2) |
Nine Months Ended September 30, 2025 |  |  |  |  |  |  |  |  |
Balance at December 31, 2024 | $ | (2,420.3) |  |  | $ | (22.1) |  |  | $ | 8.0 |  |  | $ | (14.6) |  |  | $ | (2,449.0) |
Other comprehensive income (loss) | 335.3 |  |  | 0.8 |  |  | (0.1) |  |  | 27.8 |  |  | 363.8 |
Tax (expense) benefit | 7.8 |  |  | (3.3) |  |  | — |  |  | (6.4) |  |  | (1.9) |
Other comprehensive income (loss), net of tax | 343.1 |  |  | (2.5) |  |  | (0.1) |  |  | 21.4 |  |  | 361.9 |
Other comprehensive income (loss) attributable to noncontrolling interest | (3.5) |  |  | — |  |  | — |  |  | — |  |  | (3.5) |
Balance as of September 30, 2025 | $ | (2,080.7) |  |  | $ | (24.6) |  |  | $ | 7.9 |  |  | $ | 6.8 |  |  | $ | (2,090.6) |
Nine Months Ended September 30, 2024 |  |  |  |  |  |  |  |  |
Balance at December 31, 2023 | $ | (1,930.2) |  |  | $ | (33.0) |  |  | $ | 8.1 |  |  | $ | 0.2 |  |  | $ | (1,954.9) |
Other comprehensive income (loss) | (159.1) |  |  | 3.2 |  |  | — |  |  | 1.0 |  |  | (154.9) |
Tax (expense) benefit | (2.5) |  |  | (1.4) |  |  | — |  |  | (0.2) |  |  | (4.1) |
Other comprehensive income (loss), net of tax | (161.6) |  |  | 1.8 |  |  | — |  |  | 0.8 |  |  | (159.0) |
Other comprehensive income (loss) attributable to noncontrolling interest | 2.7 |  |  | — |  |  | — |  |  | — |  |  | 2.7 |
Balance as of September 30, 2024 | $ | (2,089.1) |  |  | $ | (31.2) |  |  | $ | 8.1 |  |  | $ | 1.0 |  |  | $ | (2,111.2) |

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- Definition Accumulated Other Comprehensive Income (Loss) [Abstract] + References No definition available. + Details
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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + 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/2009/role/commonPracticeRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481674/830-30-50-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 20 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481694/830-30-45-20 + Details
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