Goodwill and Purchased Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Changes in Goodwill

The following table presents changes in goodwill (in millions):

	Access			Defense		Vocational			Total
Net goodwill at December 31, 2021	$	877.6		$	44.4	$	127.0		$	1,049.0
Foreign currency translation		(11.8	)		—		(0.5	)		(12.3	)
Acquisition		—			—		7.4			7.4
Impairment		—			—		(2.1	)		(2.1	)
Net goodwill at December 31, 2022		865.8			44.4		131.8			1,042.0
Foreign currency translation		7.1			—		—			7.1
Acquisitions		107.0			—		260.3			367.3
Net goodwill at December 31, 2023	$	979.9		$	44.4	$	392.1		$	1,416.4

In September 2022, the Company identified a triggering event that indicated a potential impairment of goodwill within one of its reporting units in the Commercial segment. The Company’s impairment test confirmed that the fair value of the reporting unit was below its carrying value. As a result, the Company recorded a $2.1 million impairment charge for goodwill in the third quarter of 2022.

Schedule of Company's Goodwill Allocated to the Reportable Segments

The following table presents details of the Company’s goodwill allocated to the reportable segments (in millions):

	December 31, 2023							December 31, 2022
	Gross		Accumulated Impairment			Net		Gross		Accumulated Impairment			Net
Access	$	1,912.0	$	(932.1	)	$	979.9	$	1,797.9	$	(932.1	)	$	865.8
Defense		44.4		—			44.4		44.4		—			44.4
Vocational		561.5		(169.4	)		392.1		303.5		(171.7	)		131.8
	$	2,517.9	$	(1,101.5	)	$	1,416.4	$	2,145.8	$	(1,103.8	)	$	1,042.0

Schedule of Purchased Intangible Assets

Details of the Company’s total purchased intangible assets are as follows (in millions):

	December 31, 2023
	Weighted- Average Life		Gross		Accumulated Amortization			Net
Amortizable intangible assets:
Customer relationships		11.5	$	819.5	$	(574.6	)	$	244.9
Trade names		12.6		118.6		(7.5	)		111.1
Technology-related		10.0		166.5		(108.2	)		58.3
Distribution network		39.2		55.3		(38.4	)		16.9
Other		6.1		37.5		(25.2	)		12.3
		12.5		1,197.4		(753.9	)		443.5
Non-amortizable trade names				386.7		—			386.7
			$	1,584.1	$	(753.9	)	$	830.2

	December 31, 2022
	Weighted- Average Life		Gross		Accumulated Amortization			Net
Amortizable intangible assets:
Customer relationships		12.6	$	576.6	$	(557.3	)	$	19.3
Trade names		10.0		26.7		—			26.7
Technology-related		12.0		108.3		(104.4	)		3.9
Distribution network		39.2		55.3		(37.0	)		18.3
Other		11.9		23.5		(22.1	)		1.4
		14.2		790.4		(720.8	)		69.6
Non-amortizable trade names				387.4		—			387.4
			$	1,177.8	$	(720.8	)	$	457.0