Parent Company Condensed Financial Information - Condensed Statements of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating activities
Net cash (used in) provided by operating activities	$ (7,227,139)	$ (7,255,858)	$ (1,350,217)
Investing activities
Proceeds from securitization investments	108,291	118,825	247,058
Proceeds from non-securitization investments	5,354	0	109,534
Net cash (used in) provided by investing activities	(1,889,864)	(106,333)	110,193
Financing activities
Proceeds from other debt issuances	339,995	439,990	1,191,908
Repayment of other debt	(799,859)	(516,363)	(912,890)
Taxes paid related to net share settlement of share-based awards	(15,300)	(8,983)	(42,644)
Payment of redeemable preferred stock dividends	(40,425)	(40,425)	(40,426)
Redemptions of redeemable common and preferred stock	0	0	(282,859)
Proceeds from Business Combination and PIPE Investment	0	0	1,989,851
Proceeds from warrant exercises	0	0	95,047
Purchase of capped calls	0	0	(113,760)
Net cash provided by financing activities	10,885,602	8,439,485	684,987
Effect of exchange rates on cash and cash equivalents	677	571	46
Net increase (decrease) in cash, cash equivalents, restricted cash and restricted cash equivalents	1,769,276	1,077,865	(554,991)
Cash, cash equivalents, restricted cash and restricted cash equivalents at beginning of period	1,846,302	768,437	1,323,428
Cash, cash equivalents, restricted cash and restricted cash equivalents at end of period	3,615,578	1,846,302	768,437
Parent Company
Operating activities
Net cash (used in) provided by operating activities	(42,618)	290,298	(136,134)
Investing activities
Changes in investments in subsidiaries	79,185	(284,295)	(3,231,314)
Issuances of notes to subsidiaries	0	0	(312)
Proceeds from securitization investments	0	0	106,994
Proceeds from non-securitization investments	0	0	107,534
Other investing activities	0	0	13,122
Net cash (used in) provided by investing activities	79,185	(284,295)	(3,003,976)
Financing activities
Net change in debt facilities	0	0	144,339
Proceeds from other debt issuances	0	0	1,010,728
Repayment of other debt	0	0	(250,000)
Taxes paid related to net share settlement of share-based awards	(15,300)	(8,983)	(42,644)
Payment of redeemable preferred stock dividends	(20,213)	0	0
Redemptions of redeemable common and preferred stock	0	0	(282,859)
Proceeds from Business Combination and PIPE Investment	0	0	1,989,851
Proceeds from warrant exercises	0	0	95,047
Purchase of capped calls	0	0	(113,760)
Other financing activities	(1,054)	2,610	(4,605)
Net cash provided by financing activities	(36,567)	(6,373)	2,546,097
Effect of exchange rates on cash and cash equivalents	0	571	46
Net increase (decrease) in cash, cash equivalents, restricted cash and restricted cash equivalents	0	201	(593,967)
Cash, cash equivalents, restricted cash and restricted cash equivalents at beginning of period	201	0	593,967
Cash, cash equivalents, restricted cash and restricted cash equivalents at end of period	$ 201	$ 201	$ 0