v3.21.2
REVENUE FROM CONTRACTS WITH CUSTOMERS
 9 Months Ended
Sep. 30, 2021
Revenue from Contract with Customer [Abstract]  
REVENUE FROM CONTRACTS WITH CUSTOMERS REVENUE FROM CONTRACTS WITH CUSTOMERS
Contract Assets and Contract Liabilities
The following table provides information about contract assets and contract liabilities from contracts with customers:
20212020
Contract AssetsContract LiabilitiesContract AssetsContract Liabilities
(Thousands of Dollars)
Balances as of January 1:
Current portion$2,694 $(22,019)$2,140 $(21,083)
Noncurrent portion932 (47,537)1,003 (40,289)
Total 3,626 (69,556)3,143 (61,372)
Activity:
Additions1,924 (29,874)4,020 (54,120)
Transfer to accounts receivable(3,907)— (3,708)— 
Transfer to revenues(375)37,159 (250)48,188 
Total (2,358)7,285 62 (5,932)
Balances as of September 30:
Current portion486 (15,194)2,170 (21,115)
Noncurrent portion585 (46,056)1,035 (46,189)
Held for sale197 (1,021)— — 
Total $1,268 $(62,271)$3,205 $(67,304)

Remaining Performance Obligations
The following table presents our estimated revenue from contracts with customers for remaining performance obligations that has not yet been recognized, representing our contractually committed revenue as of September 30, 2021 (in thousands of dollars):
2021 (remaining)$123,829 
2022423,907 
2023282,510 
2024191,229 
2025132,809 
Thereafter182,257 
Total$1,336,541 

Our contractually committed revenue, for purposes of the tabular presentation above, is generally limited to customer service contracts that have fixed pricing and fixed volume terms and conditions, generally including contracts with payment obligations for take-or-pay minimum volume commitments. The revenue shown above includes an aggregate $52.8 million relating to our Eastern U.S. Terminal Operations that were sold on October 8, 2021.
Disaggregation of Revenues
The following table disaggregates our revenues:
Three Months Ended September 30,Nine Months Ended September 30,
2021202020212020
(Thousands of Dollars)
Pipeline segment:
Crude oil pipelines $86,140 $80,195 $242,762 $251,027 
Refined products and ammonia pipelines (excluding lessor revenues)110,067 95,740 315,579 285,047 
Total pipeline segment revenues from contracts with customers
196,207 175,935 558,341 536,074 
Lessor revenues— 275 — 1,925 
Total pipeline segment revenues196,207 176,210 558,341 537,999 
Storage segment:
Throughput terminals30,771 29,260 90,708 100,182 
Storage terminals (excluding lessor revenues)67,008 82,846 214,166 233,892 
Total storage segment revenues from contracts with customers
97,779 112,106 304,874 334,074 
Lessor revenues10,363 10,329 31,090 30,985 
Total storage segment revenues108,142 122,435 335,964 365,059 
Fuels marketing segment:
Revenues from contracts with customers
107,996 63,946 306,790 191,873 
Consolidation and intersegment eliminations— — (11)(9)
Total revenues$412,345 $362,591 $1,201,084 $1,094,922