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Guarantees, Commitments and Contingencies (Details) $ in Millions | 9 Months Ended
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Sep. 30, 2017 USD ($)
Guarantor Obligations [Line Items] |
Guarantor Exposure as percent of outstanding loans | 20.00%
Franchise lending program guarantee |
Guarantor Obligations [Line Items] |
Guarantor Obligations, Maximum Exposure | $ 43
Total loans outstanding | 13
Guarantee of Indebtedness of Others [Member] |
Guarantor Obligations [Line Items] |
Guarantor Obligations, Current Exposure | $ 7
Property Lease Guarantee [Member] |
Guarantor Obligations [Line Items] |
Year longest lease expires | 2065
Guarantor Obligations, Maximum Exposure | $ 550
Guarantee Obligations Maximum Exposure At Present Value | 470
Franchise Loan Pool Guarantees [Member] | Guarantee of Indebtedness of Others [Member] |
Guarantor Obligations [Line Items] |
Guarantor Obligations, Current Exposure | 3
Total loans outstanding | $ 17

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- Definition Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=82913245&loc=d3e12069-110248 + Details
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