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Revenues (Tables)
6 Months Ended
Jun. 30, 2018
Disaggregation of Revenue [Line Items]  
Disaggregation of Revenue
The following table presents 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 Condensed Consolidated Statement of Operations (in millions):

Three Months Ended June 30, 2018
 
Transportation
 
Facilities
 
Supply and
Logistics
 
Total
Revenues from contracts with customers
 
$
470

 
$
278

 
$
8,124

 
$
8,872

Other items in revenues
 
5

 
6

 
(343
)
 
(332
)
Total revenues of reportable segments
 
$
475

 
$
284

 
$
7,781

 
$
8,540

Intersegment revenues
 
 
 
 
 
 
 
(460
)
Total revenues
 
 
 
 
 
 
 
$
8,080


Six Months Ended June 30, 2018
 
Transportation
 
Facilities
 
Supply and
Logistics
 
Total
Revenues from contracts with customers
 
$
920

 
$
560

 
$
16,298

 
$
17,778

Other items in revenues
 
9

 
16

 
(405
)
 
(380
)
Total revenues of reportable segments
 
$
929

 
$
576

 
$
15,893

 
$
17,398

Intersegment revenues
 
 
 
 
 
 
 
(920
)
Total revenues
 
 
 
 
 
 
 
$
16,478

Contracts with Customers, Assets and Liabilities
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 Condensed Consolidated Balance Sheet (in millions):

 
June 30,
2018
 
December 31, 2017
Trade accounts receivable arising from revenues from contracts with customers
$
2,721

 
$
2,584

Other trade accounts receivables and other receivables (1)
3,763

 
3,709

Impact due to contractual rights of offset with counterparties
(3,660
)
 
(3,264
)
Trade accounts receivable and other receivables, net
$
2,824

 
$
3,029

 
(1) 
The balance is comprised primarily of accounts receivable associated with buy/sell arrangements that are not within the scope of Topic 606.
The following table presents the change in the contract liability balance during the six months ended June 30, 2018 (in millions):
 
 
Contract Liabilities
Balance at December 31, 2017
 
$
90

Amounts recognized as revenue
 
(79
)
Additions (1) (2)
 
445

Other
 
(3
)
Balance at June 30, 2018
 
$
453


 
(1) 
Includes approximately $197 million 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 second half of 2018.
(2) 
Includes $100 million associated with long-term capacity agreements with Cactus II Pipeline LLC. See Note 12 for additional information.
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 June 30, 2018 (in millions):

 
Remainder of 2018
 
2019
 
2020
 
2021
 
2022
 
2023 and Thereafter
Pipeline revenues supported by minimum volume commitments and long-term capacity agreements (1)
$
51

 
$
150

 
$
193

 
$
181

 
$
180

 
$
799

Long-term storage, terminalling and throughput agreements revenues
225

 
354

 
274

 
207

 
158

 
554

Total
$
276

 
$
504

 
$
467

 
$
388

 
$
338

 
$
1,353

 
(1) 
Includes revenues from certain contracts for which the amount and timing of revenue is subject to the completion of underlying construction projects.     

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):

 
Three Months Ended
June 30, 2018
 
Six Months Ended
June 30, 2018
Supply and Logistics segment revenues from contracts with customers
 
 
 
Crude oil transactions
$
7,649

 
$
14,672

NGL and other transactions
475

 
1,626

Total Supply and Logistics segment revenues from contracts with customers
$
8,124

 
$
16,298

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):

 
Three Months Ended
June 30, 2018
 
Six Months Ended
June 30, 2018
Transportation segment revenues from contracts with customers
 
 
 
Tariff activities:

 
 
Crude oil pipelines
$
412

 
$
801

NGL pipelines
24

 
51

Total tariff activities
436

 
852

Trucking
34

 
68

Total Transportation segment revenues from contracts with customers
$
470

 
$
920

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):

 
Three Months Ended
June 30, 2018
 
Six Months Ended
June 30, 2018
Facilities segment revenues from contracts with customers
 
 
 
Crude oil, NGL and other terminalling and storage
$
171

 
$
337

NGL and natural gas processing and fractionation
91

 
191

Rail load / unload
16

 
32

Total Facilities segment revenues from contracts with customers
$
278

 
$
560