Segment and Geographic Information - Narrative (Details) $ in Thousands	3 Months Ended
Mar. 31, 2022 USD ($) segment	Mar. 31, 2021 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments \| segment	1
Revenues	$ 7,867,767	$ 7,163,282
United States
Segment Reporting Information [Line Items]
Revenues	$ 3,100,000	$ 3,000,000

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details