XML 20 R10.htm IDEA: XBRL DOCUMENT v3.21.1
STOCK COMPENSATION
3 Months Ended
Mar. 31, 2021
Share-based Payment Arrangement [Abstract]  
STOCK COMPENSATION STOCK COMPENSATION
Total stock based compensation expense for non-qualified stock options, restricted stock units ("RSU"), and the tax related benefit for the three months ended March 31, 2021 and 2020 were as follows:
Three Months Ended
(in millions)20212020
Stock option expense$$
RSU expense11 
Total stock based compensation expense$13 $
Related deferred income tax benefit$$

For the three months ended March 31, 2021 and 2020, stock compensation expense was $13 million and $9 million respectively, and was recorded in Selling, general, and administrative expense in the Consolidated Statements of Operations.