XML 31 R9.htm IDEA: XBRL DOCUMENT v3.24.0.1
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) - $ / shares
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Common stock      
Dividends paid per share (USD per share) $ 4.456 $ 3.874 $ 3.410
Class B common stock      
Dividends paid per share (USD per share) $ 4.050 $ 3.522 $ 3.100