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Revenues and Accounts Receivable - Disaggregation of Revenue (Details) - Operating Segments - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | $ 8,628 | $ 8,673
Supply and Logistics |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 7,750 | 7,846
Supply and Logistics | Crude oil transactions |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 7,322 | 6,936
Supply and Logistics | NGL and other transactions |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 428 | 910
Transportation |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 573 | 544
Transportation | Total tariff activities |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 538 | 505
Transportation | Crude oil pipelines |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 512 | 478
Transportation | NGL pipelines |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 26 | 27
Transportation | Trucking |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 35 | 39
Facilities |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 305 | 283
Facilities | Crude oil, NGL and other terminalling and storage |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 182 | 176
Facilities | NGL and natural gas processing and fractionation |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 109 | 87
Facilities | Rail load / unload |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | $ 14 | $ 20

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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
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