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Accumulated Other Comprehenive Income (Loss) | 6 Months Ended
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Jun. 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 six months ended June 30, 2025 and June 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 June 30, 2025 |  |  |  |  |  |  |  |  |
Balance at March 31, 2025 | $ | (2,313.8) |  |  | $ | (22.0) |  |  | $ | 8.0 |  |  | $ | (6.7) |  |  | $ | (2,334.5) |
Other comprehensive income (loss) | 231.0 |  |  | 0.3 |  |  | — |  |  | 10.0 |  |  | 241.3 |
Tax (expense) benefit | 8.8 |  |  | (1.2) |  |  | — |  |  | (2.3) |  |  | 5.3 |
Other comprehensive income (loss), net of tax | 239.8 |  |  | (0.9) |  |  | — |  |  | 7.7 |  |  | 246.6 |
Other comprehensive income (loss) attributable to noncontrolling interest | (1.2) |  |  | — |  |  | — |  |  | — |  |  | (1.2) |
Balance as of June 30, 2025 | $ | (2,075.2) |  |  | $ | (22.9) |  |  | $ | 8.0 |  |  | $ | 1.0 |  |  | $ | (2,089.1) |
Three Months Ended June 30, 2024 |  |  |  |  |  |  |  |  |
Balance at March 31, 2024 | $ | (2,059.1) |  |  | $ | (32.2) |  |  | $ | 8.1 |  |  | $ | (10.1) |  |  | $ | (2,093.3) |
Other comprehensive income (loss) | (135.2) |  |  | 0.8 |  |  | — |  |  | (3.4) |  |  | (137.8) |
Tax (expense) benefit | (1.3) |  |  | (0.2) |  |  | — |  |  | 0.8 |  |  | (0.7) |
Other comprehensive income (loss), net of tax | (136.5) |  |  | 0.6 |  |  | — |  |  | (2.6) |  |  | (138.5) |
Other comprehensive income (loss) attributable to noncontrolling interest | 2.4 |  |  | — |  |  | — |  |  | — |  |  | 2.4 |
Balance as of June 30, 2024 | $ | (2,193.2) |  |  | $ | (31.6) |  |  | $ | 8.1 |  |  | $ | (12.7) |  |  | $ | (2,229.4) |
Six Months Ended June 30, 2025 |  |  |  |  |  |  |  |  |
Balance at December 31, 2024 | $ | (2,420.3) |  |  | $ | (22.1) |  |  | $ | 8 |  |  | $ | (14.6) |  |  | $ | (2,449) |
Other comprehensive income (loss) | 340.1 |  |  | 0.5 |  |  | — |  |  | 20.3 |  |  | 360.9 |
Tax (expense) benefit | 7.8 |  |  | (1.3) |  |  | — |  |  | (4.7) |  |  | 1.8 |
Other comprehensive income (loss), net of tax | 347.9 |  |  | (0.8) |  |  | — |  |  | 15.6 |  |  | 362.7 |
Other comprehensive income (loss) attributable to noncontrolling interest | (2.8) |  |  | — |  |  | — |  |  | — |  |  | (2.8) |
Balance as of June 30, 2025 | $ | (2,075.2) |  |  | $ | (22.9) |  |  | $ | 8.0 |  |  | $ | 1.0 |  |  | $ | (2,089.1) |
Six Months Ended June 30, 2024 |  |  |  |  |  |  |  |  |
Balance at December 31, 2023 | $ | (1,930.2) |  |  | $ | (33.0) |  |  | $ | 8.1 |  |  | $ | 0.2 |  |  | $ | (1,954.9) |
Other comprehensive income (loss) | (260.7) |  |  | 2.1 |  |  | — |  |  | (16.7) |  |  | (275.3) |
Tax (expense) benefit | (5.5) |  |  | (0.7) |  |  | — |  |  | 3.8 |  |  | (2.4) |
Other comprehensive income (loss), net of tax | (266.2) |  |  | 1.4 |  |  | — |  |  | (12.9) |  |  | (277.7) |
Other comprehensive income (loss) attributable to noncontrolling interest | 3.2 |  |  | — |  |  | — |  |  | — |  |  | 3.2 |
Balance as of June 30, 2024 | $ | (2,193.2) |  |  | $ | (31.6) |  |  | $ | 8.1 |  |  | $ | (12.7) |  |  | $ | (2,229.4) |

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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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