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Revenues and Accounts Receivable (Tables)
12 Months Ended
Dec. 31, 2020
Disaggregation of Revenue [Line Items]  
Disaggregation of Revenue The following tables present the reconciliation of our revenues from contracts with customers (as described above for each segment) to segment revenues and total revenues as disclosed in our Consolidated Statements of Operations (in millions):
Year Ended December 31, 2020TransportationFacilitiesSupply and LogisticsTotal
Revenues from contracts with customers$2,005 $1,099 $22,351 $25,455 
Other items in revenues15 39 (292)(238)
Total revenues of reportable segments$2,020 $1,138 $22,059 $25,217 
Intersegment revenues(1,927)
Total revenues$23,290 

Year Ended December 31, 2019TransportationFacilitiesSupply and
Logistics
Total
Revenues from contracts with customers$2,283 $1,122 $31,966 $35,371 
Other items in revenues37 49 310 396 
Total revenues of reportable segments$2,320 $1,171 $32,276 $35,767 
Intersegment revenues(2,098)
Total revenues$33,669 
Year Ended December 31, 2018TransportationFacilitiesSupply and
Logistics
Total
Revenues from contracts with customers$1,976 $1,136 $32,700 $35,812 
Other items in revenues14 25 122 161 
Total revenues of reportable segments$1,990 $1,161 $32,822 $35,973 
Intersegment revenues(1,918)
Total revenues$34,055 
Contracts with customers, change in contract asset and liability balance The following table presents amounts in Other current assets and deferred revenue associated with these agreements (in millions):
December 31,
20202019
Other current assets$229 $142 
Deferred revenue (1)
$361 $155 

(1)Included in “Other current liabilities” on our Consolidated Balance Sheet.
The following table presents the changes in the liability balance associated with contracts with customers (in millions):
Contract Liabilities
Balance at December 31, 2018$338 
Amounts recognized as revenue(227)
Additions (1)
244 
Other(1)
Balance at December 31, 2019$354 
Amounts recognized as revenue (1)
(246)
Additions (2)
393 
Balance at December 31, 2020$501 

(1)Includes approximately $155 million associated with crude oil sales agreements that are entered into in conjunction with storage arrangements and future inventory exchanges. Such amount was recognized as revenue in the first quarter of 2020.    
(2)Includes approximately $361 million, as discussed above, associated with crude oil sales agreements that are entered into in conjunction with storage arrangements and future inventory exchanges. Such amount is expected to be recognized as revenue in the first quarter of 2021.
The following is a reconciliation of trade accounts receivable from revenues from contracts with customers to total Trade accounts receivable and other receivables, net as presented on our Consolidated Balance Sheets (in millions):
December 31,
20202019
Trade accounts receivable arising from revenues from contracts with customers
$2,317 $3,381 
Other trade accounts receivables and other receivables (1)
2,818 3,576 
Impact due to contractual rights of offset with counterparties(2,582)(3,343)
Trade accounts receivable and other receivables, net$2,553 $3,614 

(1)The balance is comprised primarily of accounts receivable associated with buy/sell arrangements that are not within the scope of ASC 606.
Contract with Customer, Counterparty Deficiencies
The following table presents counterparty deficiencies associated with contracts with customers and buy/sell arrangements that include minimum volume commitments for which we had remaining performance obligations and the customers still had the ability to meet their obligations (in millions):

December 31,
Counterparty deficienciesFinancial Statement Classification20202019
Billed and collectedLiability$73 $22 
Unbilled (1)
N/A20 
Total$77 $42 

(1)Amounts were related to deficiencies for which the counterparties had not met their contractual minimum commitments and are not reflected in our Consolidated Financial Statements as we had not yet billed or collected such amounts.
Remaining Performance Obligations The following table presents the amount of consideration associated with remaining performance obligations for the population of contracts with external customers meeting the presentation requirements as of December 31, 2020 (in millions):
202120222023202420252026 and Thereafter
Pipeline revenues supported by minimum volume commitments and capacity agreements (1)
$174 $166 $170 $142 $125 $455 
Storage, terminalling and throughput agreement revenues
340 273 206 173 114 328 
Total$514 $439 $376 $315 $239 $783 

(1)Calculated as volumes committed under contracts multiplied by the current applicable tariff rate.
Supply and Logistics  
Disaggregation of Revenue [Line Items]  
Disaggregation of Revenue The following table presents our Supply and Logistics segment revenues from contracts with customers disaggregated by type of activity (in millions):
Year Ended December 31,
202020192018
Supply and Logistics segment revenues from contracts with customers
Crude oil transactions$21,202 $30,082 $29,592 
NGL and other transactions1,149 1,884 3,108 
Total Supply and Logistics segment revenues from contracts with customers$22,351 $31,966 $32,700 
Transportation  
Disaggregation of Revenue [Line Items]  
Disaggregation of Revenue The following table presents our Transportation segment revenues from contracts with customers disaggregated by type of activity (in millions):
Year Ended December 31,
202020192018
Transportation segment revenues from contracts with customers
Tariff activities:
Crude oil pipelines$1,805 $2,039 $1,724 
NGL pipelines101 99 103 
Total tariff activities1,906 2,138 1,827 
Trucking99 145 149 
Total Transportation segment revenues from contracts with customers$2,005 $2,283 $1,976 
Facilities  
Disaggregation of Revenue [Line Items]  
Disaggregation of Revenue The following table presents our Facilities segment revenues from contracts with customers disaggregated by type of activity (in millions):
Year Ended December 31,
202020192018
Facilities segment revenues from contracts with customers
Crude oil, NGL and other terminalling and storage$704 $697 $688 
NGL and natural gas processing and fractionation350 349 364 
Rail load / unload45 76 84 
Total Facilities segment revenues from contracts with customers$1,099 $1,122 $1,136