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Variable Interest Entities - Narrative (Details)	6 Months Ended
	Jun. 30, 2022 investment loanTrust entity	Jun. 30, 2021 loanTrust investment	Dec. 31, 2021 investment entity
Variable Interest Entity [Line Items]
Number of consolidated VIEs | entity	12		13
Variable Interest Entity, Not Primary Beneficiary | Personal Loans
Variable Interest Entity [Line Items]
Number of loan trusts established | loanTrust	0	1
Number of investments in VIEs	8		9
Number of deconsolidated VIEs	0	0
Variable Interest Entity, Not Primary Beneficiary | Student Loans
Variable Interest Entity [Line Items]
Number of loan trusts established | loanTrust	0	3
Number of investments in VIEs	24		24
Number of deconsolidated VIEs	1	0

X

- Definition

Variable Interest Entity, Consolidated, Number of Entities

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No definition available.

+ Details

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Namespace Prefix:	sofi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

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- Definition

Variable Interest Entity, Deconsolidated, Number Of Investments

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No definition available.

+ Details

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Namespace Prefix:	sofi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

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- Definition

Variable Interest Entity, Number Of Investments

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No definition available.

+ Details

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Namespace Prefix:	sofi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

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- Definition

Variable Interest Entity, Number Of Loan Trusts Established

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No definition available.

+ Details

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Namespace Prefix:	sofi_
Data Type:	xbrli:integerItemType
Balance Type:	na
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X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Period Type:	duration

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- Details

Name:	srt_ConsolidatedEntitiesAxis=us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember
Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=sofi_PersonalLoanPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=sofi_StudentLoanPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: