Allowance for Credit Losses (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2024		Dec. 31, 2023		Dec. 31, 2022
Dealer | Wholesale
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		$ 2.7
Ending Balance		3.0		$ 2.7
Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		3.3
Ending Balance		3.0		3.3
Financial Services
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		133.0		121.1		$ 116.9
Provision for losses		75.6		31.3		5.5
Charge-offs		(62.2)		(30.3)		(9.0)
Recoveries		8.7		7.0		9.7
Currency translation and other		(9.9)		3.9		(2.0)
Ending Balance		145.2		133.0		121.1
Financial Services | Dealer | Wholesale
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		2.7		3.4		3.3
Provision for losses		0.6		(0.6)		0.1
Charge-offs				(0.2)
Currency translation and other		(0.3)		0.1
Ending Balance		3.0		2.7		3.4
Financial Services | Dealer | Retail
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		1.9		2.2		7.1
Provision for losses		(0.4)		(0.3)		(4.9)
Ending Balance		1.5		1.9		2.2
Financial Services | Customer Retail
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		125.1		112.6		104.4
Provision for losses		75.6		31.8		12.0
Charge-offs		(61.2)		(28.4)		(8.5)
Recoveries		7.4		5.6		7.5
Currency translation and other		(9.2)		3.5		(2.8)
Ending Balance		137.7		125.1		112.6
Financial Services | Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		3.3	[1]	2.9	[1]	2.1	[2]
Provision for losses		(0.2)	[1]	0.4	[1]	(1.7)	[2]
Charge-offs		(1.0)	[1]	(1.7)	[1]	(0.5)	[2]
Recoveries		1.3	[1]	1.4	[1]	2.2	[2]
Currency translation and other		(0.4)	[1]	0.3	[1]	0.8	[2]
Ending Balance	[1]	$ 3.0		$ 3.3		$ 2.9

[1] Operating lease and other trade receivables.

[2] Operating lease and other trade receivables.