Asset-Backed Financing (Assets And Liabilities Of Variable Interest Entities) (Detail) (USD $)																																																																												3 Months Ended		9 Months Ended
	Sep. 28, 2014 Financing Receivable [Member]	Dec. 31, 2013 Financing Receivable [Member]	Sep. 29, 2013 Financing Receivable [Member]	Sep. 28, 2014 Financing Receivable [Member] Asset-backed Securities [Member] SPEs [Member]	Dec. 31, 2013 Financing Receivable [Member] Asset-backed Securities [Member] SPEs [Member]	Sep. 29, 2013 Financing Receivable [Member] Asset-backed Securities [Member] SPEs [Member]	Sep. 28, 2014 Financing Receivable [Member] Asset-backed U.S. Commercial Paper Conduit Facility [Member] SPEs [Member]	Dec. 31, 2013 Financing Receivable [Member] Asset-backed U.S. Commercial Paper Conduit Facility [Member] SPEs [Member]	Sep. 29, 2013 Financing Receivable [Member] Asset-backed U.S. Commercial Paper Conduit Facility [Member] SPEs [Member]	Sep. 28, 2014 Financing Receivable [Member] Asset-Backed Canadian Commercial Paper Conduit Facility [Member] Variable Interest Entity, Not Primary Beneficiary [Member]	Dec. 31, 2013 Financing Receivable [Member] Asset-Backed Canadian Commercial Paper Conduit Facility [Member] Variable Interest Entity, Not Primary Beneficiary [Member]	Sep. 29, 2013 Financing Receivable [Member] Asset-Backed Canadian Commercial Paper Conduit Facility [Member] Variable Interest Entity, Not Primary Beneficiary [Member]	Sep. 28, 2014 Allowance for Credit Loss [Member]	Dec. 31, 2013 Allowance for Credit Loss [Member]	Sep. 29, 2013 Allowance for Credit Loss [Member]	Sep. 28, 2014 Allowance for Credit Loss [Member] Asset-backed Securities [Member] SPEs [Member]	Dec. 31, 2013 Allowance for Credit Loss [Member] Asset-backed Securities [Member] SPEs [Member]	Sep. 29, 2013 Allowance for Credit Loss [Member] Asset-backed Securities [Member] SPEs [Member]	Sep. 28, 2014 Allowance for Credit Loss [Member] Asset-backed U.S. Commercial Paper Conduit Facility [Member] SPEs [Member]	Dec. 31, 2013 Allowance for Credit Loss [Member] Asset-backed U.S. Commercial Paper Conduit Facility [Member] SPEs [Member]	Sep. 29, 2013 Allowance for Credit Loss [Member] Asset-backed U.S. Commercial Paper Conduit Facility [Member] SPEs [Member]	Sep. 28, 2014 Allowance for Credit Loss [Member] Asset-Backed Canadian Commercial Paper Conduit Facility [Member] Variable Interest Entity, Not Primary Beneficiary [Member]	Dec. 31, 2013 Allowance for Credit Loss [Member] Asset-Backed Canadian Commercial Paper Conduit Facility [Member] Variable Interest Entity, Not Primary Beneficiary [Member]	Sep. 29, 2013 Allowance for Credit Loss [Member] Asset-Backed Canadian Commercial Paper Conduit Facility [Member] Variable Interest Entity, Not Primary Beneficiary [Member]	Sep. 28, 2014 Restricted Cash [Member]	Dec. 31, 2013 Restricted Cash [Member]	Sep. 29, 2013 Restricted Cash [Member]	Sep. 28, 2014 Restricted Cash [Member] Asset-backed Securities [Member] SPEs [Member]	Dec. 31, 2013 Restricted Cash [Member] Asset-backed Securities [Member] SPEs [Member]	Sep. 29, 2013 Restricted Cash [Member] Asset-backed Securities [Member] SPEs [Member]	Sep. 28, 2014 Restricted Cash [Member] Asset-backed U.S. Commercial Paper Conduit Facility [Member] SPEs [Member]	Dec. 31, 2013 Restricted Cash [Member] Asset-backed U.S. Commercial Paper Conduit Facility [Member] SPEs [Member]	Sep. 29, 2013 Restricted Cash [Member] Asset-backed U.S. Commercial Paper Conduit Facility [Member] SPEs [Member]	Sep. 28, 2014 Restricted Cash [Member] Asset-Backed Canadian Commercial Paper Conduit Facility [Member] Variable Interest Entity, Not Primary Beneficiary [Member]	Dec. 31, 2013 Restricted Cash [Member] Asset-Backed Canadian Commercial Paper Conduit Facility [Member] Variable Interest Entity, Not Primary Beneficiary [Member]	Sep. 29, 2013 Restricted Cash [Member] Asset-Backed Canadian Commercial Paper Conduit Facility [Member] Variable Interest Entity, Not Primary Beneficiary [Member]	Sep. 28, 2014 Other Assets [Member]	Dec. 31, 2013 Other Assets [Member]	Sep. 29, 2013 Other Assets [Member]	Sep. 28, 2014 Other Assets [Member] Asset-backed Securities [Member] SPEs [Member]	Dec. 31, 2013 Other Assets [Member] Asset-backed Securities [Member] SPEs [Member]	Sep. 29, 2013 Other Assets [Member] Asset-backed Securities [Member] SPEs [Member]	Sep. 28, 2014 Other Assets [Member] Asset-backed U.S. Commercial Paper Conduit Facility [Member] SPEs [Member]	Dec. 31, 2013 Other Assets [Member] Asset-backed U.S. Commercial Paper Conduit Facility [Member] SPEs [Member]	Sep. 29, 2013 Other Assets [Member] Asset-backed U.S. Commercial Paper Conduit Facility [Member] SPEs [Member]	Sep. 28, 2014 Other Assets [Member] Asset-Backed Canadian Commercial Paper Conduit Facility [Member] Variable Interest Entity, Not Primary Beneficiary [Member]	Dec. 31, 2013 Other Assets [Member] Asset-Backed Canadian Commercial Paper Conduit Facility [Member] Variable Interest Entity, Not Primary Beneficiary [Member]	Sep. 29, 2013 Other Assets [Member] Asset-Backed Canadian Commercial Paper Conduit Facility [Member] Variable Interest Entity, Not Primary Beneficiary [Member]	Sep. 28, 2014 Assets, Total [Member]	Dec. 31, 2013 Assets, Total [Member]	Sep. 29, 2013 Assets, Total [Member]	Sep. 28, 2014 Assets, Total [Member] Asset-backed Securities [Member] SPEs [Member]	Dec. 31, 2013 Assets, Total [Member] Asset-backed Securities [Member] SPEs [Member]	Sep. 29, 2013 Assets, Total [Member] Asset-backed Securities [Member] SPEs [Member]	Sep. 28, 2014 Assets, Total [Member] Asset-backed U.S. Commercial Paper Conduit Facility [Member] SPEs [Member]	Dec. 31, 2013 Assets, Total [Member] Asset-backed U.S. Commercial Paper Conduit Facility [Member] SPEs [Member]	Sep. 29, 2013 Assets, Total [Member] Asset-backed U.S. Commercial Paper Conduit Facility [Member] SPEs [Member]	Sep. 28, 2014 Assets, Total [Member] Asset-Backed Canadian Commercial Paper Conduit Facility [Member] Variable Interest Entity, Not Primary Beneficiary [Member]	Dec. 31, 2013 Assets, Total [Member] Asset-Backed Canadian Commercial Paper Conduit Facility [Member] Variable Interest Entity, Not Primary Beneficiary [Member]	Sep. 29, 2013 Assets, Total [Member] Asset-Backed Canadian Commercial Paper Conduit Facility [Member] Variable Interest Entity, Not Primary Beneficiary [Member]	Sep. 28, 2014 Asset-backed debt [Member]	Dec. 31, 2013 Asset-backed debt [Member]	Sep. 29, 2013 Asset-backed debt [Member]	Sep. 28, 2014 Asset-backed debt [Member] Asset-backed Securities [Member] SPEs [Member]	Dec. 31, 2013 Asset-backed debt [Member] Asset-backed Securities [Member] SPEs [Member]	Sep. 29, 2013 Asset-backed debt [Member] Asset-backed Securities [Member] SPEs [Member]	Sep. 28, 2014 Asset-backed debt [Member] Asset-backed U.S. Commercial Paper Conduit Facility [Member] SPEs [Member]	Dec. 31, 2013 Asset-backed debt [Member] Asset-backed U.S. Commercial Paper Conduit Facility [Member] SPEs [Member]	Sep. 29, 2013 Asset-backed debt [Member] Asset-backed U.S. Commercial Paper Conduit Facility [Member] SPEs [Member]	Sep. 28, 2014 Asset-backed debt [Member] Asset-Backed Canadian Commercial Paper Conduit Facility [Member] Variable Interest Entity, Not Primary Beneficiary [Member]	Dec. 31, 2013 Asset-backed debt [Member] Asset-Backed Canadian Commercial Paper Conduit Facility [Member] Variable Interest Entity, Not Primary Beneficiary [Member]	Sep. 29, 2013 Asset-backed debt [Member] Asset-Backed Canadian Commercial Paper Conduit Facility [Member] Variable Interest Entity, Not Primary Beneficiary [Member]	Jun. 29, 2014 Term Asset-Backed Securitization Sold at Premium VIEs [Member] Secured Debt [Member] SPEs [Member]	Jun. 30, 2013 Term Asset-Backed Securitization Sold at Premium VIEs [Member] Secured Debt [Member] SPEs [Member]	Dec. 31, 2012 Term Asset-Backed Securitization Sold at Premium VIEs [Member] Secured Debt [Member] SPEs [Member]	Sep. 28, 2014 Asset-Backed Canadian Commercial Paper Conduit Facility [Member] Foreign Line of Credit [Member] Variable Interest Entity, Not Primary Beneficiary [Member]	Sep. 29, 2013 Asset-Backed Canadian Commercial Paper Conduit Facility [Member] Foreign Line of Credit [Member] Variable Interest Entity, Not Primary Beneficiary [Member]	Sep. 28, 2014 Asset-Backed Canadian Commercial Paper Conduit Facility [Member] Foreign Line of Credit [Member] Variable Interest Entity, Not Primary Beneficiary [Member]	Sep. 29, 2013 Asset-Backed Canadian Commercial Paper Conduit Facility [Member] Foreign Line of Credit [Member] Variable Interest Entity, Not Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Company issued secured notes																																																																									$ 850,000,000	$ 650,000,000	$ 89,500,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Contractually Required Payments Receivable at Acquisition																																																																												24,400,000	26,300,000	66,500,000	80,200,000
Transfers Accounted for as Secured Borrowings, Assets, Carrying Amount	1,855,485,000	1,773,210,000	2,123,275,000	1,651,552,000	1,569,118,000	1,918,447,000	0	0	0	203,933,000	204,092,000	204,828,000													142,286,000	144,807,000	194,329,000	129,828,000	133,053,000	181,231,000	0	0	0	12,458,000	11,754,000	13,098,000	4,058,000	4,738,000	5,549,000	3,313,000	3,720,000	4,866,000	532,000	429,000	590,000	213,000	589,000	93,000	1,963,455,000	1,887,616,000	2,282,008,000	1,749,578,000	1,674,113,000	2,066,823,000	532,000	429,000	590,000	213,345,000	213,074,000	214,595,000	1,640,314,000	1,430,873,000	1,627,240,000	1,475,148,000	1,256,632,000	1,446,656,000	0	0	0	165,166,000	174,241,000	180,584,000
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount													$ (38,374,000)	$ (35,139,000)	$ (41,145,000)	$ (35,115,000)	$ (31,778,000)	$ (37,721,000)	$ 0	$ 0	$ 0	$ (3,259,000)	$ (3,361,000)	$ (3,424,000)