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Revenue Remaining Performance Obligations (Details) - USD ($) $ in Millions | Sep. 30, 2019 | Dec. 31, 2018
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Remaining Performance Obligations [Abstract] |  |
Loan receivable | $ 1,370 | $ 1,423
Revenue, Remaining Performance Obligation, Amount | $ 13 |

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- Definition Remaining Performance Obligations [Abstract] + References No definition available. + Details
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- Definition Amount, before allowance for credit loss, of financing receivable, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118952595&loc=d3e4428-111522 + Details
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- Definition Amount of transaction price allocated to performance obligation that has not been recognized as revenue. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130556-203045 + Details
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