Asset-Backed Financing Schedule of loans acquired in transfer not accounted for as debt securities (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 27, 2016	Mar. 29, 2015
Variable Interest Entity [Line Items]
Document Fiscal Year Focus	2016
Variable Interest Entity, Not Primary Beneficiary [Member] \| Foreign Line of Credit [Member] \| Asset-Backed Canadian Commercial Paper Conduit Facility [Member]
Variable Interest Entity [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Contractually Required Payments Receivable at Acquisition	$ 6,600	$ 19,200
Line of Credit [Member] \| Variable Interest Entity, Not Primary Beneficiary [Member] \| Foreign Line of Credit [Member] \| Asset-Backed Canadian Commercial Paper Conduit Facility [Member]
Variable Interest Entity [Line Items]
Cash Flows Between Transferor and Transferee, Proceeds from New Transfers	$ 5,800	$ 16,800

This is focus fiscal year of the document report in CCYY format. For a 2006 annual report, which may also provide financial information from prior periods, fiscal 2006 should be given as the fiscal year focus. Example: 2006.

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- Definition

Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Contractually Required Payments Received at Acquisition

+ References

No definition available.

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- Definition

Cash Flows between a transferor and a transferee attributable to newly transferred assets related to either a securitization, asset-backed financing arrangement, or similar transfer in which the transferor has continuing involvement with the transferred financial assets underlying the transaction (including, but not limited to, servicing, recourse, and restrictions on transferor's interests in the transferred financial assets).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (d)(1)
-URI http://asc.fasb.org/extlink&oid=51814546&loc=d3e107207-111719

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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