Finance and Other Receivables (Detail) - Financial Services - USD ($) $ in Millions		Mar. 31, 2016	Dec. 31, 2015		Mar. 31, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		$ 3,982.6	$ 4,011.7
Direct financing leases		2,787.5	2,719.5
Sales-type finance leases		928.2	969.8
Dealer wholesale financing		1,912.0	1,950.1
Operating lease receivables and other		144.0	131.9
Unearned interest: Finance leases		(359.6)	(364.6)
Finance and other receivables, net of deferred income		9,394.7	9,418.4
Less allowance for losses		(114.9)	(114.8)		$ (117.8)	$ (122.0)
Finance and other receivables, net		9,279.8	9,303.6	[1]
Loans And Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less allowance for losses		(98.4)	(99.2)
Dealer | Wholesale
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less allowance for losses		(7.1)	(7.3)		(8.8)	(9.0)
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less allowance for losses	[2]	$ (9.4)	$ (8.3)		$ (8.4)	$ (7.5)

[1] The December 31, 2015 consolidated balance sheet has been derived from audited financial statements.

[2] Operating leases and other trade receivables.