Goodwill and Other Intangible Assets - Other Intangible Assets Subject to Amortization (Details) - Madison Industries IAQ Solutions Corporation - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization	$ (661.1)	$ (621.0)
Trademarks
Indefinite-Lived Intangible Assets [Line Items]
Total	1,299.6	1,300.7
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	2,071.5	2,072.8
Accumulated amortization	(406.4)	(376.2)
Total	1,665.1	1,696.6
Technology
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	364.0	365.8
Accumulated amortization	(147.9)	(138.6)
Total	216.1	227.2
Patents
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	16.0	16.0
Accumulated amortization	(12.7)	(12.3)
Total	3.3	3.7
Backlog and Other
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	99.5	97.5
Accumulated amortization	(94.1)	(93.9)
Total	$ 5.4	$ 3.6