XML 65 R54.htm IDEA: XBRL DOCUMENT v3.20.2
Income (Loss) Per Share - Additional information (Details) - shares
shares in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Employee Stock Option [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive Securities Excluded From Computation Of Earnings Per Share, Amount 2.3 6.9 7.0 6.9