Accumulated Other Comprehensive Income (Details 3) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2023	Jun. 30, 2022
Net earnings	$ 213,927	$ 188,426	$ 212,070	$ 174,001	$ 402,353	$ 386,071
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(38,700)	$ (1,283)	(31,491)	$ 4,350	(39,983)	(27,141)
Comprehensive Income, Net of Tax (Note 9)	$ 175,227		$ 180,579		$ 362,370	$ 358,930