Basis of Presentation and Summary of Significant Accounting Policies - Schedule of Contract Assets and Liabilities (Detail) - USD ($) $ in Millions	12 Months Ended
	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%