Segment Reporting - Balance Sheets (Details) - USD ($) $ in Thousands		Dec. 31, 2023	Dec. 31, 2022
Assets
Total cash and cash equivalents		$ 1,252,504	$ 1,057,030
Restricted cash	[1]	41,644	67,454
Total securities available for sale		1,620,262	345,702
Loans held for sale at fair value		407,773	110,400
Loans and leases held for investment, net		4,539,915	4,705,302
Loans held for investment at fair value		262,190	925,938
Retail and certificate loans held for investment at fair value	[1]	10,488	55,425
Property, equipment and software, net		161,517	136,473
Investment in subsidiary		0	0
Goodwill		75,717	75,717
Other assets	[1]	455,453	500,306
Total assets		8,827,463	7,979,747
Liabilities and Equity
Total deposits		7,333,486	6,392,553
Borrowings	[1]	8,866	74,858
Retail notes and certificates at fair value		10,488	55,425
Other liabilities	[1]	222,801	292,617
Total liabilities		7,575,641	6,815,453
Total equity		1,251,822	1,164,294
Total liabilities and equity		8,827,463	7,979,747
Operating Segments | LendingClub Bank
Assets
Total cash and cash equivalents		1,230,206	1,020,874
Restricted cash		0	0
Total securities available for sale		1,617,309	329,287
Loans held for sale at fair value		407,773	110,400
Loans and leases held for investment, net		4,539,915	4,705,302
Loans held for investment at fair value		253,800	906,711
Retail and certificate loans held for investment at fair value		0	0
Property, equipment and software, net		144,439	102,274
Investment in subsidiary		0	0
Goodwill		75,717	75,717
Other assets		341,680	339,341
Total assets		8,610,839	7,589,906
Liabilities and Equity
Total deposits		7,426,445	6,420,827
Borrowings		6,398	64,154
Retail notes and certificates at fair value		0	0
Other liabilities		154,077	189,185
Total liabilities		7,586,920	6,674,166
Total equity		1,023,919	915,740
Total liabilities and equity		8,610,839	7,589,906
Operating Segments | LendingClub Corporation (Parent only)
Assets
Total cash and cash equivalents		110,273	56,475
Restricted cash		46,628	75,409
Total securities available for sale		2,953	16,415
Loans held for sale at fair value		0	0
Loans and leases held for investment, net		0	0
Loans held for investment at fair value		8,390	19,227
Retail and certificate loans held for investment at fair value		10,488	55,425
Property, equipment and software, net		17,078	34,199
Investment in subsidiary		816,703	755,319
Goodwill		0	0
Other assets		131,135	173,851
Total assets		1,143,648	1,186,320
Liabilities and Equity
Total deposits		0	0
Borrowings		2,468	10,704
Retail notes and certificates at fair value		10,488	55,425
Other liabilities		86,086	116,318
Total liabilities		99,042	182,447
Total equity		1,044,606	1,003,873
Total liabilities and equity		1,143,648	1,186,320
Intersegment Eliminations
Assets
Total cash and cash equivalents		(87,975)	(20,319)
Restricted cash		(4,984)	(7,955)
Total securities available for sale		0	0
Loans held for sale at fair value		0	0
Loans and leases held for investment, net		0	0
Loans held for investment at fair value		0	0
Retail and certificate loans held for investment at fair value		0	0
Property, equipment and software, net		0	0
Investment in subsidiary		(816,703)	(755,319)
Goodwill		0	0
Other assets		(17,362)	(12,886)
Total assets		(927,024)	(796,479)
Liabilities and Equity
Total deposits		(92,959)	(28,274)
Borrowings		0	0
Retail notes and certificates at fair value		0	0
Other liabilities		(17,362)	(12,886)
Total liabilities		(110,321)	(41,160)
Total equity		(816,703)	(755,319)
Total liabilities and equity		$ (927,024)	$ (796,479)

[1] Includes amounts in consolidated variable interest entities (VIEs). See “Notes to Consolidated Financial Statements – Note 7. Securitizations and Variable Interest Entities.”