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Cloud Computing Costs (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Research and Development [Abstract]          
Short-term portion $ 29.7   $ 29.7   $ 26.4
Long-term portion 129.7   129.7   116.9
Total capitalized implementation costs 159.4   159.4   143.3
Less: accumulated amortization (55.1)   (55.1)   (36.6)
Capitalized implementation costs, net 104.3   104.3   $ 106.7
Capitalized implementation costs, amortization $ 6.9 $ 5.4 $ 19.5 $ 14.7