XML 70 R60.htm IDEA: XBRL DOCUMENT v3.21.2
Preferred and Common Stockholders' Equity - Potentially Dilutive Common Shares Excluded from EPS Computation (Details) - shares
shares in Millions
6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Equity [Abstract]    
Anti-dilutive options and RSUs excluded from EPS computation 7.0 7.1