Revenue - Schedule of Revenue by Country (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue	$ 1,513.7	$ 1,246.2	$ 1,024.2
United States [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue	989.5	784.1	624.4
Canada [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue	331.0	288.6	254.2
Other Country [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue	$ 193.2	$ 173.5	$ 145.6