XML 21 R9.htm IDEA: XBRL DOCUMENT v3.21.1
Condensed Consolidated Statements of Equity (unaudited) (Parenthetical) - $ / shares
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]    
Dividends on common stock (usd per share) $ 0.565 $ 0.535