Allowance for Credit Losses (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for losses		$ 31.3	$ 5.5	$ 0.5
Dealer | Wholesale
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		3.4
Ending Balance		2.7	3.4
Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		2.9
Ending Balance		3.3	2.9
Financial Services
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		121.1	116.9	127.0
Provision for losses		31.3	5.5	0.5
Charge-offs		(30.3)	(9.0)	(14.8)
Recoveries		7.0	9.7	6.5
Currency translation and other		3.9	(2.0)	(2.3)
Ending Balance		133.0	121.1	116.9
Financial Services | Dealer | Wholesale
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		3.4	3.3	3.4
Provision for losses		(0.6)	0.1
Charge-offs		(0.2)
Currency translation and other		0.1		(0.1)
Ending Balance		2.7	3.4	3.3
Financial Services | Dealer | Retail
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		2.2	7.1	8.4
Provision for losses		(0.3)	(4.9)	(1.3)
Ending Balance		1.9	2.2	7.1
Financial Services | Customer Retail
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		112.6	104.4	112.0
Provision for losses		31.8	12.0	0.6
Charge-offs		(28.4)	(8.5)	(12.3)
Recoveries		5.6	7.5	6.2
Currency translation and other		3.5	(2.8)	(2.1)
Ending Balance		125.1	112.6	104.4
Financial Services | Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	[1]	2.9	2.1	3.2
Provision for losses	[1]	0.4	(1.7)	1.2
Charge-offs	[1]	(1.7)	(0.5)	(2.5)
Recoveries	[1]	1.4	2.2	0.3
Currency translation and other	[1]	0.3	0.8	(0.1)
Ending Balance	[1]	$ 3.3	$ 2.9	$ 2.1

[1] Operating lease and other trade receivables.