STATEMENTS OF SHAREHOLDERS' EQUITY (UNAUDITED) (Parenthetical)	3 Months Ended
	Mar. 31, 2024 participant $ / shares	Mar. 31, 2023 participant $ / shares
Number of incentive compensation deferral plan participants | participant	3	2
Class A common stock
Dividends declared (in dollars per share)	$ 1.275	$ 1.19
Class B common stock
Dividends declared (in dollars per share)	$ 191.25	$ 178.50