Income Taxes - Earnings Before Income Taxes and Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings before income taxes:
United States	$ 689,278	$ 1,007,847	$ 743,687
Foreign	125,818	208,615	163,749
Operating income	815,096	1,216,462	907,436
Income tax expense:
Partnership UBT	5,996	6,951	3,356
Corporate subsidiaries:
Federal	1,457	750	1,495
State and local	931	956	904
Foreign	34,327	58,080	44,086
Current tax expense	42,711	66,737	49,841
Deferred tax	(3,072)	(4,009)	(4,188)
Income tax expense	$ 39,639	$ 62,728	$ 45,653