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Accounts Receivable and Contract Balances - Schedule of Accounts Receivable (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
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Revenue from Contract with Customer [Abstract] |  |
Accounts receivable, current | $ 4,707.8 | $ 4,386.4
Unbilled accounts receivable, current | 1,077.3 | 749.4
Unbilled accounts receivable, noncurrent | 1,162.5 | 923.0
Total accounts receivable | $ 6,947.6 | $ 6,058.8

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