TDRs Modified During Previous Twelve Months that Subsequently Defaulted (Detail) (Financial Services, USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2014	Mar. 31, 2013
Troubled Debt Restructuring, Subsequent Default [Line Items]
Recorded Investment, subsequently defaulted	$ 0.3	$ 0.6
Customer Retail \| Fleet
Troubled Debt Restructuring, Subsequent Default [Line Items]
Recorded Investment, subsequently defaulted	0.2	0.5
Customer Retail \| Owner/Operator
Troubled Debt Restructuring, Subsequent Default [Line Items]
Recorded Investment, subsequently defaulted	$ 0.1	$ 0.1

Amount of investment related to financing receivables modified by troubled debt restructurings within the previous 12 months, for which there was a payment default.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 34

-URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953682-111524

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration