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Share-Based Payments - Share-Based Compensation Expense by Share-Based Compensation Program (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Summary of share based compensation expense associated with different programs [Abstract] |  |  |  |
Subtotal | $ 78.1 | $ 72.9 | $ 162.2 | $ 144.3
Capitalized share-based compensation costs | (3.2) | (2.3) | (6.3) | (5.6)
Share-based compensation expense included in total cost and expense | 74.9 | 70.6 | 155.9 | 138.7
Time-vested restricted stock units |  |  |  |
Summary of share based compensation expense associated with different programs [Abstract] |  |  |  |
Share-based compensation expense | 60.6 | 58.3 | 126.7 | 115.6
Performance stock units settled in stock |  |  |  |
Summary of share based compensation expense associated with different programs [Abstract] |  |  |  |
Share-based compensation expense | 15.0 | 11.7 | 28.6 | 22.2
Employee stock purchase plan |  |  |  |
Summary of share based compensation expense associated with different programs [Abstract] |  |  |  |
Share-based compensation expense | 1.6 | 1.8 | 5.1 | 6.3
Performance stock units settled in cash |  |  |  |
Summary of share based compensation expense associated with different programs [Abstract] |  |  |  |
Share-based compensation expense | 0.0 | 0.1 | 0.0 | (2.0)
Stock options |  |  |  |
Summary of share based compensation expense associated with different programs [Abstract] |  |  |  |
Share-based compensation expense | 0.9 | 0.9 | 1.8 | 1.8
Market stock units |  |  |  |
Summary of share based compensation expense associated with different programs [Abstract] |  |  |  |
Share-based compensation expense | $ 0.0 | $ 0.1 | $ 0.0 | $ 0.4

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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section S45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479983/718-10-S45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479830/718-10-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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