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Commitments and Contingent Liabilities Guarantees (Details) - USD ($) $ in Millions | Jun. 30, 2018 | Dec. 31, 2017
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Guarantor Obligations [Line Items] |  |  |
Guarantor Obligations, Maximum Exposure, Undiscounted |  | $ 292 | $ 297
Customer Guarantee, Bank Borrowings [Member] |  |  |
Guarantor Obligations [Line Items] |  |  |
Guarantor Obligations, Maximum Exposure, Undiscounted | [1] | $ 89 |
Guaranteed Obligations, Maximum Term, Years |  | 4 years |
Equity Affiliates Guarantee, Bank Borrowings [Member] |  |  |
Guarantor Obligations [Line Items] |  |  |
Guarantor Obligations, Maximum Exposure, Undiscounted | [2] | $ 167 |
Guaranteed Obligations, Maximum Term, Months |  | 6 months |
Residual Value Guarantee [Member] |  |  |
Guarantor Obligations [Line Items] |  |  |
Guarantor Obligations, Maximum Exposure, Undiscounted | [3] | $ 36 |
Guaranteed Obligations, Maximum Term, Years |  | 11 years |
Current Portion [Member] | Customer Guarantee, Bank Borrowings [Member] |  |  |
Guarantor Obligations [Line Items] |  |  |
Guarantor Obligations, Maximum Exposure, Undiscounted |  | $ 85 |
[1] | Existing guarantees for select customers, as part of contractual agreements. The terms of the guarantees are equivalent to the terms of the customer loans that are primarily made to finance customer invoices. Of the total maximum future payments, $85 million
[2] | Existing guarantees for non-consolidated affiliates' liquidity needs in normal operations.
[3] | The company provides guarantees related to leased assets specifying the residual value that will be available to the lessor at lease termination through sale of the assets to the lessee or third parties.

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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. + References No definition available. + Details
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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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