Allowance for Credit Losses (Detail) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for losses		$ 3.1	$ 0.2
Dealer | Wholesale
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		3.4
Ending Balance		3.6
Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		2.9
Ending Balance		3.1
Financial Services
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		121.1	116.9
Provision for losses		3.1	0.2
Charge-offs		(3.4)	(2.6)
Recoveries		1.5	1.9
Currency translation and other		1.5	1.9
Ending Balance		123.8	118.3
Financial Services | Dealer | Wholesale
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		3.4	3.3
Provision for losses		0.2	0.4
Ending Balance		3.6	3.7
Financial Services | Dealer | Retail
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		2.2	7.1
Provision for losses		(0.1)	(1.9)
Ending Balance		2.1	5.2
Financial Services | Customer Retail
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		112.6	104.4
Provision for losses		3.0	1.2
Charge-offs		(3.3)	(2.5)
Recoveries		1.4	1.9
Currency translation and other		1.3	1.0
Ending Balance		115.0	106.0
Financial Services | Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	[1]	2.9	2.1
Provision for losses	[1]		0.5
Charge-offs	[1]	(0.1)	(0.1)
Recoveries	[1]	0.1
Currency translation and other	[1]	0.2	0.9
Ending Balance	[1]	$ 3.1	$ 3.4

[1] Operating leases and other trade receivables.