STATEMENTS OF SHAREHOLDERS' EQUITY (UNAUDITED) (Parenthetical)	3 Months Ended				6 Months Ended
	Jun. 30, 2024 Participants $ / shares	Mar. 31, 2024 $ / shares	Jun. 30, 2023 Participants $ / shares	Mar. 31, 2023 $ / shares	Jun. 30, 2024 Participants $ / shares	Jun. 30, 2023 Participants $ / shares
Rabbi trust, number of incentive compensation deferral plan participants receiving distributions | Participants	5		5		5	5
Class A common stock
Dividends declared (in dollars per share)	$ 1.275	$ 1.275	$ 1.19	$ 1.19	$ 2.55	$ 2.38
Class B common stock
Dividends declared (in dollars per share)	$ 191.25	$ 191.25	$ 178.50	$ 178.50	$ 382.50	$ 357.00