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Basis of Presentation and Summary of Significant Accounting Policies - Schedule of Contract Assets and Liabilities (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023
Accounting Policies [Abstract] |  |
Contract assets | $ 46.7 | $ 70.8
Contract liabilities | 38.8 | 53.7
Net contract assets | 7.9 | $ 17.1
$ Change |  |
Contract assets | (24.1) |
Contract liabilities | (14.9) |
Net contract assets | $ (9.2) |
% Change |  |
Contract assets | (34.00%) |
Contract liabilities | (27.70%) |
Net contract assets | (53.80%) |
Percent of contract liabilities |  | 95.00%

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