Reclassification out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other income, net	$ (1,678)	$ 24,632	$ (472)	$ 30,227
Income Tax Expense (Benefit)	(15,175)	(36,782)	(62,187)	(73,594)
Net earnings	32,707	134,748	204,959	281,907
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net earnings	(2,666)	(2,198)	(5,193)	(3,320)
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other income, net	(3,287)	(2,798)	(6,504)	(4,170)
Income Tax Expense (Benefit)	620	600	1,310	850
Net earnings	(2,667)	(2,198)	(5,194)	(3,320)
Reclassification out of Accumulated Other Comprehensive Income | AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other income, net	2	0	2	0
Income Tax Expense (Benefit)	1	0	1	0
Net earnings	$ 1	$ 0	$ 1	$ 0