Segment Information - Additional Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) Segment	Jun. 30, 2020 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | Segment			4
Revenues	$ 727,352	$ 598,806	$ 1,542,628	$ 1,297,302
Bermuda, Cayman Islands, Ireland and London
Segment Reporting Information [Line Items]
Revenues	$ 19,100	$ 9,200	$ 36,600	$ 16,100