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REVENUE (Notes) | 12 Months Ended
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Dec. 31, 2023
Revenue from Contract with Customer | REVENUE The following table sets forth our revenues disaggregated by source for the periods indicated:
|  |  |  | Years Ended December 31,
|  |  |  |  |  | 2023 |  | 2022 |  | 2021
|  |  |  |  |  | (Thousands of dollars)
Natural gas sales to customers |  |  |  |  |  | $ | 2,141,908 |  |  | $ | 2,410,048 |  |  | $ | 1,652,566 |
Transportation revenues |  |  |  |  |  | 132,945 |  |  | 125,951 |  |  | 118,492 |
Securitization customer charges (Note 17) |  |  |  |  |  | 48,677 |  |  | 5,769 |  |  | — |
Miscellaneous revenues |  |  |  |  |  | 22,791 |  |  | 19,850 |  |  | 16,757 |
Total revenues from contracts with customers |  |  |  |  |  | 2,346,321 |  |  | 2,561,618 |  |  | 1,787,815
Other revenues - natural gas sales related |  |  |  |  |  | 12,764 |  |  | 3,403 |  |  | 9,650 |
Other revenues |  |  |  |  |  | 12,905 |  |  | 12,984 |  |  | 11,132 |
Total other revenues |  |  |  |  |  | 25,669 |  |  | 16,387 |  |  | 20,782 |
Total revenues |  |  |  |  |  | $ | 2,371,990 |  |  | $ | 2,578,005 |  |  | $ | 1,808,597 |
Accrued unbilled natural gas sales revenues at December 31, 2023 and December 31, 2022, were $191.4 million and $269.5 million, respectively, and are included in accounts receivable on our consolidated balance sheets.

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- Definition The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-9 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-10 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-15 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-12 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-12 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-12 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-12 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-12 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-13 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Topic 606 -Publisher FASB -URI https://asc.fasb.org//606/tableOfContent + Details
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