Other assets (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Other Assets Disclosure [Abstract]
Net deferred tax assets (net of valuation allowance)	$ 953,676	$ 657,597
Investments in equity method investees	210,001	298,988
Prepaid taxes	39,405	37,924
Other prepaid expenses	33,384	34,937
Capitalized computer software costs	81,862	44,908
Derivative assets	19,229	26,093
Trades receivables from brokers and counterparties	35,099	65,460
Receivables from investment maturities	125,000	0
Principal, interest and escrow servicing advances	41,916	53,942
Guaranteed mortgage loan claims receivable	59,659	98,001
Operating ROU assets	125,573	141,748
Finance ROU assets	18,884	13,459
Others	104,125	155,514
Total other assets	$ 1,847,813	$ 1,628,571
Operating Lease Right Of Use Asset Statement Of Financial Position	Other assets	Other assets
Finance Lease Right Of Use Asset Statement Of Financial Position	Other assets	Other assets