STATEMENTS OF SHAREHOLDERS' EQUITY (UNAUDITED) (Parenthetical) - $ / shares	3 Months Ended						9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021
Class A common stock
Dividends declared (in dollars per share)	$ 1.11	$ 1.11	$ 1.11	$ 1.035	$ 1.035	$ 1.035	$ 3.33	$ 3.105
Class B common stock
Dividends declared (in dollars per share)	$ 166.50	$ 166.50	$ 166.50	$ 155.25	$ 155.25	$ 155.25	$ 499.50	$ 465.75