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Revenue Recognition (Tables)
 12 Months Ended
Dec. 31, 2020
Revenue from Contract with Customer [Abstract]  
Disaggregation of Revenue
The following table provides information about disaggregated revenue by service type and customer type:

202020192018
Transportation services revenue – third parties$114 $134 $200 
Transportation services revenue – related parties (1)
164 210 176 
Storage services revenue – third parties9 9 9 
Storage services revenue – related parties8 7 7 
Terminaling services revenue – related parties (2)
103 47 46 
Terminaling services revenue – major maintenance service – related parties (3)
7 — — 
Product revenue – third parties (4)
— 5 2 
Product revenue – related parties (4)
19 35 29 
Total Topic 606 revenue424 447 469 
Lease revenue – related parties57 56 56 
Total revenue$481 $503 $525 

(1) Transportation services revenue – related parties for each of 2020, 2019 and 2018 includes $5 million of non-lease service component in our transportation services contract.
(2) Terminaling services revenue – related parties is comprised of the service components in our terminaling services contracts, including the operation and maintenance service components related to the Norco Assets in connection with the April 2020 Transaction. See Note 4 – Related Party Transactions for additional details.
(3) Terminaling services revenue – major maintenance service – related parties is comprised of the service components related to providing required major maintenance to the Norco Assets in connection with the April 2020 Transaction. See Note 4 – Related Party Transactions for additional details.
(4) Product revenue is comprised of allowance oil sales.
Schedule of New Accounting Pronouncements and Changes in Accounting Principles
Contract with Customer, Asset and Liability The following table provides information about receivables and contract liabilities from contracts with customers:
January 1, 2020December 31, 2020
Receivables from contracts with customers – third parties$11 $19 
Receivables from contracts with customers – related parties24 18 
Contract Assets - related parties— 233 
Deferred revenue – third parties— 4 
Deferred revenue – related parties (1)
— 19 
(1) Deferred revenue - related parties is related to deficiency credits from certain minimum volume commitment contracts and certain components of our terminaling service contracts on the Norco Assets.
January 1, 2019December 31, 2019
Receivables from contracts with customers – third parties$19 $11 
Receivables from contracts with customers – related parties21 24 
Deferred revenue – third parties8 — 
Deferred revenue – related parties3 — 
Contract With Customer, Estimated Future Amortization
The estimated future amortization related to the contract assets for the next five years is as follows:
20212022202320242025
Amortization$15 $16 $16 $17 $17 
Contract With Customer, Deferred Revenue Activity
Significant changes in the deferred revenue balances with customers during the period are as follows:
December 31, 2019
Additions (1)
Reductions (2)
December 31, 2020
Deferred revenue – third parties$— $8 $(4)$4 
Deferred revenue – related parties— 21 (2)19 
(1) Deferred revenue additions resulted from $24 million deficiency payments from minimum volume commitment contracts and $5 million of deferred revenue related to the major maintenance service components of our terminaling service contracts on the Norco Assets.
(2) Deferred revenue reductions resulted from revenue earned through the actual or estimated use and expiration of deficiency credits.

December 31, 2018
Additions (1)
Reductions (2)
December 31, 2019
Deferred revenue – third parties$8 $— $(8)$— 
Deferred revenue – related parties3 — (3)— 
(1) Deferred revenue additions resulted from deficiency payments from minimum volume commitment contracts.
(2) Deferred revenue reductions resulted from revenue earned through the actual or estimated use and expiration of deficiency credits.
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
The following table includes revenue expected to be recognized in the future related to performance obligations exceeding one year of their initial terms that are unsatisfied or partially unsatisfied as of December 31, 2020:

Total20212022202320242025 and beyond
Revenue expected to be recognized on multi-year committed shipper transportation contracts$472 $63 $63 $63 $57 $226 
Revenue expected to be recognized on other multi-year transportation service contracts (1)
34 6 6 6 5 11 
Revenue expected to be recognized on multi-year storage service contracts 17 4 4 4 5 — 
Revenue expected to be recognized on multi-year terminaling service contracts (1)
335 48 48 48 48 143 
Revenue expected to be recognized on multi-year operation and major maintenance terminaling service contracts(2)
1,508 106 106 106 106 1,084 
Total$2,366 $227 $227 $227 $221 $1,464 
(1) Relates to the non-lease service components of certain of our long-term transportation and terminaling service contracts which are accounted for as operating leases.
(2) Relates to the operation and maintenance service components and the major maintenance service components of our terminaling service contracts on the Norco Assets in connection with the April 2020 Transaction.
Operating Lease, Lease Income As of December 31, 2020, future minimum payments of both the lease and non-lease service components to be received under the ten-year contract term of these operating leases were estimated to be:
TotalLess than 1 yearYears 2 to 3Years 4 to 5More than 5 years
Operating leases$735 $111 $220 $220 $184