Fair Value Measurements - Narrative (Details) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended	6 Months Ended
	Jun. 30, 2021 USD ($) investment $ / shares shares	Jun. 30, 2021 USD ($) investment $ / shares shares	Jun. 30, 2021 USD ($) investment $ / shares shares	Jun. 30, 2020 USD ($)	Jun. 14, 2021 USD ($) shares	May 28, 2021 $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares	Oct. 14, 2020 shares
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of warrants issued (in shares) | shares					28,125,000
Exercise price of warrants (in dollars per share) | $ / shares						$ 8.86	$ 8.86
Common stock, shares authorized (in shares) | shares	3,100,000,000	3,100,000,000	3,100,000,000				789,167,056
Warrant liabilities	$ 239,343	$ 239,343	$ 239,343		$ 200,250		$ 39,959
Fair value changes in warrant liabilities			160,909	$ 2,018
General and administrative
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value changes in warrant liabilities	39,093
Level 1 | Fair Value | Fair Value, Recurring | Exchange Traded Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of non-securitization investments, other	4,266	4,266	4,266				$ 6,850
Level 1 | Fair Value | Fair Value, Recurring | Non-Securitization Investments, Common Stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of non-securitization investments, other	613	613	613
Level 3 | Fair Value | Fair Value, Nonrecurring | Other Security Investments, Equity Investment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of non-securitization investments, other	$ 1,147	$ 1,147	$ 1,147
Number of impaired investments | investment	1	1	1
Impairment charge				$ 803
Level 3 | Fair Value | Fair Value, Nonrecurring | Other Security Investments, Additional Equity Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of non-securitization investments, other	$ 2,168	$ 2,168	$ 2,168
Realized investment gain		3,967
Proceeds from sale of investment		$ 2,000
Redemption of Warrants, Exceeds $18.00
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Stock price trigger for redemption of public warrants (in dollars per share) | $ / shares	$ 18.00	$ 18.00	$ 18.00
Redemption price per warrant (in dollars per share) | $ / shares	0.01	0.01	0.01
Redemption of Warrants, Exceeds $10.00
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Stock price trigger for redemption of public warrants (in dollars per share) | $ / shares	10.00	10.00	10.00
Redemption price per warrant (in dollars per share) | $ / shares	$ 0.10	$ 0.10	$ 0.10
SoFi Technology Warrants
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Common stock, shares authorized (in shares) | shares					28,125,000
Initial Public Offering | Class A Common Stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of shares called for by each public warrant (in shares) | shares						1
Exercise price of warrants (in dollars per share) | $ / shares						$ 11.50
SCH Sponsor V LLC | Private Placement | Social Capital Hedosophia Holdings Corp. V
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of warrants issued (in shares) | shares								8,000,000
SCH Sponsor V LLC | Initial Public Offering | Social Capital Hedosophia Holdings Corp. V
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of warrants issued (in shares) | shares								20,125,000