XML 47 R59.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Note 8 - Stock-based Compensation - Stock-based Compensation Expense and Related Income Tax Benefit (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Stock-based compensation expense, gross $ 16 $ 7 $ 8
Income tax benefit at our statutory rate associated with stock-based compensation (4) (2) (3)
Stock-based compensation expense, net $ 12 $ 5 $ 5