CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended		20 Months Ended
	Feb. 11, 2021	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022
CASH FLOWS FROM OPERATING ACTIVITIES
Net (loss) income	$ 294,598	$ (137,482)	$ 154,277	$ (452,623)	$ 608,414	$ 313,816
Adjustments to reconcile net (loss) income to net
Depreciation and amortization expense		10,243	8,688	32,110	25,827
Amortization of operating lease right-of-use asset				17,107	16,932
Amortization of debt issuance costs				12,842	9,382
Gain on origination and sale of loans				(946,506)	(2,856,544)
Gain on sale of servicing rights				(10,548)	(1,453)
Fair value change in trading securities				20,196	0
Provision for loss obligation on sold loans and servicing rights				125,047	12,400
(Decrease) increase in provision for deferred income taxes				(62,733)	37,269
Fair value change in derivative assets				32,223	312,586
Fair value change in derivative liabilities				112,040	(119,270)
Premium (paid) received on derivatives				(154,205)	4,376
Purchase of options contracts				0	(10,383)
Fair value change in loans held for sale		81,197	33,819	255,716	67,010
Fair value change in servicing rights				(180,136)	224,812
Stock-based compensation expense				11,794	64,349
Change in fair value of contingent consideration				0	(77)
Originations of loans				(46,842,973)	(107,717,154)
Proceeds from sales of loans				52,732,911	107,911,005
Proceeds from principal payments				119,708	119,822
Payments to investors for loan repurchases				(578,010)	(818,011)
Gain on extinguishment of debt				(10,528)	0
Goodwill impairment		0	0	40,736	0
Disbursements from joint ventures				8,435	8,765
Other changes in operating assets and liabilities				132,310	41,105
Net cash provided by (used in) operating activities				4,414,913	(2,058,838)
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of property and equipment				(37,613)	(43,830)
Proceeds from sale of servicing rights				689,937	332,931
Cash flows received on trading securities				5,894	617
Investments in joint ventures				(350)	(1,115)
Return of capital from joint ventures				0	189
Net cash flows provided by investing activities				657,868	288,792
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from borrowings on warehouse and other lines of credit				52,089,587	121,009,551
Repayment of borrowings on warehouse and other lines of credit				(57,017,350)	(119,374,838)
Proceeds from debt obligations				2,106,024	1,179,037
Payments on debt obligations				(1,442,931)	(477,541)
Payments of debt issuance costs				(4,555)	(15,839)
Payments for contingent consideration				0	(113)
Payments on financing lease obligation				0	(1,911)
Treasury stock purchased to net settle and withhold taxes on vested shares				(373)	(12,844)
Dividends and shareholder distributions				(118,905)	(419,732)
Net cash (used in) provided by financing activities				(4,388,503)	1,885,770
Net change in cash and cash equivalents and restricted cash				684,278	115,724
Cash and cash equivalents and restricted cash at beginning of the period	$ 488,689			620,596	488,689
Cash and cash equivalents and restricted cash at end of the period		$ 1,304,874	$ 604,413	1,304,874	604,413	$ 1,304,874
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Interest				178,135	180,143
Income taxes				23,857	1,923
Supplemental disclosure of noncash investing and financing activities
Operating leases right-of-use assets obtained in exchange for lease liabilities				14,677	8,501
Trading securities retained in securitizations				50,426	57,031
Purchase of equipment under financing leases				$ 0	$ 168