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EARNINGS PER SHARE (Tables)
12 Months Ended
Dec. 31, 2020
Earnings Per Share [Abstract]  
Schedule of reconciliation of income (numerator) and shares (denominator) used in computation of diluted earnings per share
The following table reconciles income (numerator) and shares (denominator) used in our computations of earnings per share for the years ended December 31, 2020, 2019, and 2018 (in millions, except share amounts which are reflected in thousands):
 
 202020192018
Income (Numerator)   
Net (loss) income$(2,429)$105 $346 
Net income attributable to the redeemable noncontrolling interests(56)(48)— 
Net loss (income) attributable to the noncontrolling interests 71 (10)(5)
Numerator for basic and diluted earnings per common share available to common shareholders$(2,414)$47 $341 
Shares (Denominator)   
Basic weighted-average common shares outstanding79,924 92,015 100,913 
Dilutive effect of stock settled appreciation rights and outstanding stock options— 1,170 805 
Diluted weighted-average common and common equivalent shares outstanding79,924 93,185 101,718 
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share
The following table shows the weighted-average stock-settled appreciation rights and outstanding stock options (in thousands) that are excluded from the calculation of diluted earnings per common share as the inclusion of such shares would be anti-dilutive.

 202020192018
Weighted-average stock-settled appreciation rights and outstanding stock options excluded3,288 238 1,325