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Revenues and Segment Information, Receivables from Contracts with Customers (Details) - USD ($) $ in Billions | Sep. 30, 2019 | Dec. 31, 2018
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Receivables from Contracts with Customers [Member] |  |
Receivables from Contracts with Customers |  |
Receivables from contracts with customers | $ 5.3 | $ 4.7

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- Definition Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current. + 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 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=118952595&loc=d3e4531-111522 + Details
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