Accumulated Other Comprehensive Income (Details 3) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2022	Jun. 30, 2021
Net earnings	$ 212,070	$ 174,001	$ 184,763	$ 149,663	$ 386,071	$ 334,426
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(31,491)	$ 4,350	9,152	$ 23,181	(27,141)	32,333
Comprehensive Income, Net of Tax (Note 9)	$ 180,579		$ 193,915		$ 358,930	$ 366,759