UNCONSOLIDATED AFFILIATES (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Schedule of Equity Method Investments [Line Items]
Equity in net earnings from investments	$ 39,180	$ 28,573	$ 111,150	$ 87,613
Unconsolidated Affiliates [Member]
Schedule of Equity Method Investments [Line Items]
Related Party Transaction, Expenses from Transactions with Related Parties	25,400	16,200	55,500	44,200
Northern Border Pipeline
Schedule of Equity Method Investments [Line Items]
Equity in net earnings from investments	16,744	14,634	53,216	47,459
Roadrunner
Schedule of Equity Method Investments [Line Items]
Equity in net earnings from investments	9,600	8,056	28,041	23,407
Overland Pass Pipeline
Schedule of Equity Method Investments [Line Items]
Equity in net earnings from investments	10,486	5,241	23,379	12,952
Other Unconsolidated Affiliates
Schedule of Equity Method Investments [Line Items]
Equity in net earnings from investments	$ 2,350	$ 642	$ 6,514	$ 3,795

Amount of income (loss) for proportionate share of equity method investee's income (loss).

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