Segment Reporting (Consolidated Net Revenues By Similar Products And Services) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	$ 1,378,441	$ 652,091
Commerce [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	910,624	380,710
Fintech [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	$ 467,817	$ 271,381