Allowance for Credit Losses (Detail) - USD ($) $ in Millions		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for losses		$ 7.9	$ 4.6
Dealer | Wholesale
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		3.4
Ending Balance		3.8
Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		2.9
Ending Balance		2.8
Financial Services
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		121.1	116.9
Provision for losses		7.9	4.6
Charge-offs		(9.4)	(4.7)
Recoveries		3.2	3.6
Currency translation and other		3.4	(0.8)
Ending Balance		126.2	119.6
Financial Services | Dealer | Wholesale
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		3.4	3.3
Provision for losses		0.3	0.8
Currency translation and other		0.1	(0.2)
Ending Balance		3.8	3.9
Financial Services | Dealer | Retail
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		2.2	7.1
Provision for losses		(0.3)	(2.5)
Ending Balance		1.9	4.6
Financial Services | Customer Retail
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		112.6	104.4
Provision for losses		8.4	6.1
Charge-offs		(9.4)	(4.4)
Recoveries		3.1	3.3
Currency translation and other		3.0	(1.2)
Ending Balance		117.7	108.2
Financial Services | Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	[1]	2.9	2.1
Provision for losses	[1]	(0.5)	0.2
Charge-offs	[1]		(0.3)
Recoveries	[1]	0.1	0.3
Currency translation and other	[1]	0.3	0.6
Ending Balance	[1]	$ 2.8	$ 2.9

[1] Operating leases and other trade receivables.