Revenue Recognition (Disaggregation of Revenue by Principal Geographic Area, Based on Customers' Domiciles) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Disaggregation of Revenue [Line Items]
Total revenue	$ 915,527	$ 841,661	$ 2,759,352	$ 2,538,756
United States
Disaggregation of Revenue [Line Items]
Total revenue	603,046	560,292	1,815,066	1,646,023
Europe, the Middle East and Africa
Disaggregation of Revenue [Line Items]
Total revenue	177,852	152,235	532,526	488,036
Asia Pacific Region
Disaggregation of Revenue [Line Items]
Total revenue	77,666	76,799	236,932	240,760
Canada
Disaggregation of Revenue [Line Items]
Total revenue	35,612	33,642	113,209	108,407
Latin America & Caribbean
Disaggregation of Revenue [Line Items]
Total revenue	$ 21,351	$ 18,693	$ 61,619	$ 55,530