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UNCONSOLIDATED AFFILIATES (Tables)
3 Months Ended
Mar. 31, 2022
Equity In Net Earnings From Investments  
Schedule of Equity Method Investments [Line Items]  
Schedule of Equity Method Investments [Table Text Block] The following table sets forth our equity in net earnings from investments for the periods indicated:
Three Months Ended
March 31,
 20222021
 
(Thousands of dollars)
Northern Border Pipeline$20,125 $20,239 
Roadrunner9,141 7,749 
Overland Pass Pipeline5,008 2,972 
Other2,066 2,360 
Equity in net earnings from investments$36,340 $33,320