The number of units (items of property) under operating lease arrangements.

No definition available.

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- 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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- Definition

Carrying amount of the assets in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), where the reporting entity is not the VIE's primary beneficiary.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph a
-URI http://asc.fasb.org/extlink&oid=118582676&loc=d3e5728-111685

+ Details

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Balance Type:	debit
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- Definition

Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 5A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=118582676&loc=SL6759159-111685

+ Details

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- Details

Name:	srt_OwnershipAxis=sf_JetHoldingSRLMember
Namespace Prefix:
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Balance Type:
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- Details

Name:	dei_LegalEntityAxis=sf_FANEngineSecuritizationLtdMember
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Variable Interest Entities (Details) $ in Millions	Jul. 31, 2018 Air_craft	Dec. 31, 2019 USD ($) Air_craft
Variable Interest Entity [Line Items]
Assets in partnership \| $		$ 258.2
Number of Aircraft engines		14
Jet Holding S.a.r.l. [Member]
Variable Interest Entity [Line Items]
Ownership interest	100.00%
FAN Engine Securitization Ltd [Member]
Variable Interest Entity [Line Items]
Number of Aircraft engines	24
FAN Engine Securitization Ltd [Member] \| Jet Holding S.a.r.l. [Member]
Variable Interest Entity [Line Items]
Ownership interest	100.00%