Asset-Backed Financing (Narrative) (Detail)			3 Months Ended
	Mar. 30, 2014 Term Asset-Backed Securitization VIEs [Member] Secured Debt [Member] SPEs [Member] USD ($)	Mar. 31, 2013 Term Asset-Backed Securitization VIEs [Member] Secured Debt [Member] SPEs [Member] USD ($)	Mar. 30, 2014 Asset-Backed Canadian Commercial Paper Conduit Facility [Member] Foreign Line of Credit [Member] Variable Interest Entity, Not Primary Beneficiary [Member] USD ($)	Mar. 30, 2014 Asset-Backed Canadian Commercial Paper Conduit Facility [Member] Foreign Line of Credit [Member] Variable Interest Entity, Not Primary Beneficiary [Member] CAD	Mar. 30, 2014 Line of Credit [Member] Asset-Backed Canadian Commercial Paper Conduit Facility [Member] Foreign Line of Credit [Member] Variable Interest Entity, Not Primary Beneficiary [Member] USD ($)	Mar. 30, 2014 Third-party Bank [Member] Line of Credit [Member] Asset-Backed U.S. Commercial Paper Conduit Facility VIE [Member] SPEs [Member] USD ($)	Dec. 31, 2013 Third-party Bank [Member] Line of Credit [Member] Asset-Backed U.S. Commercial Paper Conduit Facility VIE [Member] SPEs [Member] USD ($)	Mar. 31, 2013 Third-party Bank [Member] Line of Credit [Member] Asset-Backed U.S. Commercial Paper Conduit Facility VIE [Member] SPEs [Member] USD ($)
Variable Interest Entity [Line Items]
Unaccreted premium	$ 400,000	$ 1,000,000
Line of Credit Facility, Current Borrowing Capacity				200,000,000		600,000,000
Debt Instrument, Term			5 years	5 years
Borrowings outstanding under conduit facility						0	0	0
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount			44,800,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Contractually Required Payments Receivable at Acquisition			15,700,000
Cash Flows Between Transferor and Transferee, Proceeds from New Transfers					$ 13,800,000