CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (UNAUDITED) (Parenthetical)	3 Months Ended				6 Months Ended
	Jun. 30, 2025 participant $ / shares	Mar. 31, 2025 $ / shares	Jun. 30, 2024 participant $ / shares	Mar. 31, 2024 $ / shares	Jun. 30, 2025 participant $ / shares	Jun. 30, 2024 participant $ / shares
Number of incentive compensation deferral plan participants | participant	3		5		3	5
Class A common stock
Dividends declared (in dollars per share)	$ 1.365	$ 1.365	$ 1.275	$ 1.275	$ 2.73	$ 2.55
Class B common stock
Dividends declared (in dollars per share)	$ 204.75	$ 204.75	$ 191.25	$ 191.25	$ 409.50	$ 382.50