Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The following table summarizes the carrying amount of goodwill, and the changes in the carrying amount of goodwill in the three months ended March 31, 2023, by segment:

(in millions)	Environmental Solutions		Safety & Security Systems		Total
Balance at January 1, 2023	$	343.8	$	109.6	$	453.4
Acquisitions	4.5		—		4.5
Translation adjustments	—		0.5		0.5
Balance at March 31, 2023	$	348.3	$	110.1	$	458.4

Schedule of Finite-Lived Intangible Assets

The following table summarizes the gross carrying amount and accumulated amortization of intangible assets for each major class of intangible assets:

	March 31, 2023						December 31, 2022
(in millions)	Gross Carrying Value		Accumulated Amortization		Net Carrying Value		Gross Carrying Value		Accumulated Amortization		Net Carrying Value
Definite-lived intangible assets:
Customer relationships (a)	$	159.0	$	(55.4)	$	103.6	$	153.7	$	(52.0)	$	101.7
Other (a)	6.0		(3.6)		2.4		5.7		(3.4)		2.3
Total definite-lived intangible assets	165.0		(59.0)		106.0		159.4		(55.4)		104.0
Indefinite-lived intangible assets:
Trade names	102.5		—		102.5		99.9		—		99.9
Other	4.3		—		4.3		4.3		—		4.3
Total indefinite-lived intangible assets	106.8		—		106.8		104.2		—		104.2
Total intangible assets	$	271.8	$	(59.0)	$	212.8	$	263.6	$	(55.4)	$	208.2

(a)    Average useful life of customer relationships and other definite-lived intangible assets are estimated to be approximately 12 years and 7 years, respectively. The average useful life across all definite-lived intangible assets is estimated to be approximately 12 years.

Schedule of Indefinite-Lived Intangible Assets

The following table summarizes the gross carrying amount and accumulated amortization of intangible assets for each major class of intangible assets:

	March 31, 2023						December 31, 2022
(in millions)	Gross Carrying Value		Accumulated Amortization		Net Carrying Value		Gross Carrying Value		Accumulated Amortization		Net Carrying Value
Definite-lived intangible assets:
Customer relationships (a)	$	159.0	$	(55.4)	$	103.6	$	153.7	$	(52.0)	$	101.7
Other (a)	6.0		(3.6)		2.4		5.7		(3.4)		2.3
Total definite-lived intangible assets	165.0		(59.0)		106.0		159.4		(55.4)		104.0
Indefinite-lived intangible assets:
Trade names	102.5		—		102.5		99.9		—		99.9
Other	4.3		—		4.3		4.3		—		4.3
Total indefinite-lived intangible assets	106.8		—		106.8		104.2		—		104.2
Total intangible assets	$	271.8	$	(59.0)	$	212.8	$	263.6	$	(55.4)	$	208.2

(a)    Average useful life of customer relationships and other definite-lived intangible assets are estimated to be approximately 12 years and 7 years, respectively. The average useful life across all definite-lived intangible assets is estimated to be approximately 12 years.