Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Millions		3 Months Ended				9 Months Ended
		Sep. 30, 2024		Sep. 30, 2023		Sep. 30, 2024		Sep. 30, 2023
Disaggregation Of Revenue [Line Items]
Net sales		$ 2,741.4		$ 2,509.9		$ 8,132.1		$ 7,191.1
Operating Segments
Disaggregation Of Revenue [Line Items]
Net sales		2,741.4		2,509.9		8,132.1		7,191.1
Eliminations
Disaggregation Of Revenue [Line Items]
Net sales		0.0		0.0		0.0		0.0
Transferred at Point in Time
Disaggregation Of Revenue [Line Items]
Net sales		1,949.8		1,840.1		5,743.1		5,269.3
Transferred over Time
Disaggregation Of Revenue [Line Items]
Net sales		791.6		669.8		2,389.0		1,921.8
Access Segment
Disaggregation Of Revenue [Line Items]
Net sales		1,363.3		1,318.2		4,007.7		3,839.7
Access Segment | Operating Segments
Disaggregation Of Revenue [Line Items]
Net sales		1,363.3		1,318.2		4,007.7		3,839.7
Access Segment | Eliminations
Disaggregation Of Revenue [Line Items]
Net sales		0.0		0.0		0.0		0.0
Access Segment | Transferred at Point in Time | Operating Segments
Disaggregation Of Revenue [Line Items]
Net sales		1,347.0		1,303.8		3,956.9		3,799.6
Access Segment | Transferred over Time | Operating Segments
Disaggregation Of Revenue [Line Items]
Net sales		16.3		14.4		50.8		40.1
Defense Segment
Disaggregation Of Revenue [Line Items]
Net sales	[1]	539.8		474.0		1,619.6		1,439.7
Defense Segment | Operating Segments
Disaggregation Of Revenue [Line Items]
Net sales		540.4	[1]	474.6	[2],[3]	1,621.4	[1]	1,440.9	[2],[3]
Defense Segment | Eliminations
Disaggregation Of Revenue [Line Items]
Net sales	[1]	0.6		0.6		1.8		1.2
Defense Segment | Transferred at Point in Time | Operating Segments
Disaggregation Of Revenue [Line Items]
Net sales		6.5		4.2	[2]	11.7		10.4	[2]
Defense Segment | Transferred over Time | Operating Segments
Disaggregation Of Revenue [Line Items]
Net sales		533.9		470.4	[2]	1,609.7		1,430.5	[2]
Vocational Segment
Disaggregation Of Revenue [Line Items]
Net sales		814.0		692.2		2,428.8		1,841.3
Vocational Segment | Operating Segments
Disaggregation Of Revenue [Line Items]
Net sales		814.2		692.6		2,429.7		1,842.8
Vocational Segment | Eliminations
Disaggregation Of Revenue [Line Items]
Net sales		0.2		0.4		0.9		1.5
Vocational Segment | Transferred at Point in Time | Operating Segments
Disaggregation Of Revenue [Line Items]
Net sales		597.2		533.1		1,777.2		1,462.0
Vocational Segment | Transferred over Time | Operating Segments
Disaggregation Of Revenue [Line Items]
Net sales		217.0		159.5		652.5		380.8
Corporate and Other
Disaggregation Of Revenue [Line Items]
Net sales	[1]	24.3		25.5		76.0		70.4
Corporate and Other | Operating Segments
Disaggregation Of Revenue [Line Items]
Net sales		23.5	[1]	24.5	[2],[3]	73.3	[1]	67.7	[2],[3]
Corporate and Other | Eliminations
Disaggregation Of Revenue [Line Items]
Net sales	[1]	(0.8)		(1.0)		(2.7)		(2.7)
Corporate and Other | Transferred at Point in Time | Operating Segments
Disaggregation Of Revenue [Line Items]
Net sales		(0.9)		(1.0)	[2]	(2.7)		(2.7)	[2]
Corporate and Other | Transferred over Time | Operating Segments
Disaggregation Of Revenue [Line Items]
Net sales		$ 24.4		$ 25.5	[2]	$ 76.0		$ 70.4	[2]

[1] Results have been reclassified to reflect the change in responsibility for Pratt Miller.

[2] Results have been reclassified to reflect the change in responsibility for Pratt Miller.

[3] Results have been reclassified to reflect the change in responsibility for Pratt Miller.