Segment Reporting - Statements of Operations (Details) - USD ($)		3 Months Ended		5 Months Ended		6 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021		Jun. 30, 2020
Segment Reporting Information [Line Items]
Marketplace revenue	[1]	$ 151,735,000	$ 18,881,000			$ 233,462,000		$ 121,358,000
Other non-interest income	[1]	6,741,000	2,540,000			12,348,000		7,051,000
Total non-interest income	[1]	158,476,000	21,421,000			245,810,000		128,409,000
Interest income	[1]	67,727,000	60,560,000			112,317,000		129,971,000
Interest expense	[1]	(21,822,000)	(41,623,000)			(47,906,000)		(86,836,000)
Net interest income		45,905,000	18,937,000			64,411,000		43,135,000
Total net revenue	[1]	204,381,000	40,358,000			310,221,000		171,544,000
Reversal of (provision for) credit losses	[1]	(34,634,000)	3,511,000			(56,127,000)	[2]	(7,469,000)	[2]
Non-interest expense	[1]	(160,139,000)	(122,340,000)			(294,391,000)		(290,314,000)
Income (Loss) before income tax expense		9,608,000	(78,471,000)			(40,297,000)		(126,239,000)
Income tax expense		(237,000)	0			2,584,000		(319,000)
Consolidated net income (loss)		9,371,000	(78,471,000)			(37,713,000)	[2]	(126,558,000)	[2]
Capital expenditures		8,619,000	8,148,000			14,984,000		19,583,000
Depreciation and amortization	[1]	11,508,000	16,611,000			23,274,000		29,484,000
Operating Segments | LendingClub Corporation
Segment Reporting Information [Line Items]
Marketplace revenue		23,021,000	18,881,000			68,686,000		121,358,000
Other non-interest income		4,281,000	2,540,000			8,379,000		7,051,000
Total non-interest income		27,302,000	21,421,000			77,065,000		128,409,000
Interest income		22,402,000	60,560,000			49,494,000		129,971,000
Interest expense		(19,850,000)	(41,623,000)			(44,687,000)		(86,836,000)
Net interest income		2,552,000	18,937,000			4,807,000		43,135,000
Total net revenue		29,854,000	40,358,000			81,872,000		171,544,000
Reversal of (provision for) credit losses		322,000	3,511,000			2,792,000		(7,469,000)
Non-interest expense		(47,837,000)	(122,340,000)			(124,781,000)		(290,314,000)
Income (Loss) before income tax expense		(17,661,000)	(78,471,000)			(40,117,000)		(126,239,000)
Income tax expense		8,922,000	0			11,214,000		(319,000)
Consolidated net income (loss)		(8,739,000)	(78,471,000)			(28,903,000)		(126,558,000)
Capital expenditures		0	8,148,000			1,811,000		19,583,000
Depreciation and amortization		10,534,000	16,611,000			21,684,000		29,484,000
Operating Segments | LendingClub Bank
Segment Reporting Information [Line Items]
Marketplace revenue		128,714,000	0	$ 164,776,000	$ 0
Other non-interest income		28,340,000	0	48,040,000	0
Total non-interest income		157,054,000	0	212,816,000	0
Interest income		45,325,000	0	62,823,000	0
Interest expense		(1,972,000)	0	(3,219,000)	0
Net interest income		43,353,000	0	59,604,000	0
Total net revenue		200,407,000	0	272,420,000	0
Reversal of (provision for) credit losses		(34,956,000)	0	(58,919,000)	0
Non-interest expense		(138,182,000)	0	(213,681,000)	0
Income (Loss) before income tax expense		27,269,000	0	(180,000)	0
Income tax expense		12,513,000	0	12,536,000	0
Consolidated net income (loss)		39,782,000	0	12,356,000	0
Capital expenditures		8,619,000	0	13,173,000	0
Depreciation and amortization		974,000	0	$ 1,590,000	$ 0
Intercompany Eliminations
Segment Reporting Information [Line Items]
Marketplace revenue		0	0			0		0
Other non-interest income		(25,880,000)	0			(44,071,000)		0
Total non-interest income		(25,880,000)	0			(44,071,000)		0
Interest income		0	0			0		0
Interest expense		0	0			0		0
Net interest income		0	0			0		0
Total net revenue		(25,880,000)	0			(44,071,000)		0
Reversal of (provision for) credit losses		0	0			0		0
Non-interest expense		25,880,000	0			44,071,000		0
Income (Loss) before income tax expense		0	0			0		0
Income tax expense		(21,672,000)	0			(21,166,000)		0
Consolidated net income (loss)		(21,672,000)	0			(21,166,000)		0
Capital expenditures		0	0			0		0
Depreciation and amortization		$ 0	$ 0			$ 0		$ 0

[1] Prior period amounts have been reclassified to conform to the current period presentation. See “Notes to Condensed Consolidated Financial Statements – Note 1. Summary of Significant Accounting Policies” for additional information.

[2] Prior period amounts have been reclassified to conform to the current period presentation. See “Notes to Condensed Consolidated Financial Statements – Note 1. Summary of Significant Accounting Policies” for additional information.