Accumulated Other Comprehensive Income (Schedule of Reclassifications Out of Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of revenue	$ 370,780		$ 346,514		$ 728,004	$ 684,310
Interest expense	10,542		8,317		23,669	15,313
Tax expense	61,693		39,104		115,327	86,630
Gain (loss), net of tax	224,236	$ 214,054	131,979	$ 193,965	438,290	325,944
Reclassification Out of Accumulated Other Comprehensive Income | Defined benefit plans
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of revenue	(212)		(311)		(351)	(311)
Tax expense	(34)		(51)		(54)	(51)
Gain (loss), net of tax	(178)		(260)		(297)	(260)
Foreign currency exchange contracts | Reclassification Out of Accumulated Other Comprehensive Income | Foreign currency exchange contracts
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of revenue	115		5,781		450	8,017
Tax expense	60		1,577		177	2,187
Gain (loss), net of tax	55		4,204		273	5,830
Interest rate swap contracts | Reclassification Out of Accumulated Other Comprehensive Income | Foreign currency exchange contracts
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Interest expense	283		0		283	0
Tax expense	67		0		67	0
Gain (loss), net of tax	$ 216		$ 0		$ 216	$ 0