Goodwill and Other Intangible Assets

3 Months Ended

Mar. 31, 2026

Madison Industries IAQ Solutions Corporation

Intangible Asset And Goodwill [Line Items]

Goodwill and Other Intangible Assets

Goodwill and Other Intangible Assets

The change in the carrying amount of goodwill for the three months ended March 31, 2026 was as follows:

	Commercial		Residential		Total
Balance at December 31, 2025	$	2,242.0	$	1,076.5	$	3,318.5
Foreign currency translation	(1.9)		—		(1.9)
Balance at March 31, 2026	$	2,240.1	$	1,076.5	$	3,316.6

The following tables provide the gross carrying amounts and accumulated amortization for other intangible assets subject to amortization at March 31, 2026 and December 31, 2025:

	Trademarks		Customer Relationships		Technology		Patents		Backlog and Other		Total
Gross carrying amount	$	1,299.6	$	2,071.5	$	364.0	$	16.0	$	99.5	$	3,850.6
Accumulated amortization	—		(406.4)		(147.9)		(12.7)		(94.1)		(661.1)
Balance at March 31, 2026	$	1,299.6	$	1,665.1	$	216.1	$	3.3	$	5.4	$	3,189.5

	Trademarks		Customer Relationships		Technology		Patents		Backlog and Other		Total
Gross carrying amount	$	1,300.7	$	2,072.8	$	365.8	$	16.0	$	97.5	$	3,852.8
Accumulated amortization	—		(376.2)		(138.6)		(12.3)		(93.9)		(621.0)
Balance at December 31, 2025	$	1,300.7	$	1,696.6	$	227.2	$	3.7	$	3.6	$	3,231.8

Intangible asset amortization expenses was $40.9 and $25.2 for the three months ended March 31, 2026 and March 31, 2025, respectively.