Leases - Supplemental Cash Flow Information (Details) - Madison Industries IAQ Solutions Corporation - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Lessee, Lease, Description [Line Items]
Operating cash flow from operating leases	$ 7.2	$ 6.3
ROU assets obtained in exchange for new operating lease liabilities	35.9	1.3
Operating cash flows from finance leases	0.1	0.1
Financing cash flows for finance leases	0.6	0.5
ROU assets obtained in exchange for new finance lease liabilities	$ 1.2	$ 0.3