XML 52 R37.htm IDEA: XBRL DOCUMENT v3.20.4
Redeemable Noncontrolling Interest (Tables)
 12 Months Ended
Dec. 31, 2020
Noncontrolling Interest [Abstract]  
Summary of Redeemable Noncontrolling Interest
The following depicts changes to the balance of the redeemable noncontrolling interest:
 
Redeemable Noncontrolling
Interest
(Thousands of dollars)
Balance, December 31, 2018$81,831 
Net income attributable to redeemable noncontrolling interest2,711 
Balance, December 31, 201984,542 
Net income attributable to redeemable noncontrolling interest6,661 
Redemption value adjustment74,513 
Balance, December 31, 2020$165,716