Business and Organization (Details)	12 Months Ended
Dec. 31, 2021 segment
Business Acquisition [Line Items]
Number of reportable segments	1
Minimum
Business Acquisition [Line Items]
Ground leases term	30 years
Ground lease investment initial targeted value of ground lease of combined value	30.00%
Ground lease, ratio of property net operating income to ground lease payments due	2.0
Percentage cap for Ground Lease rent increases based on consumer price index	3.00%
Maximum
Business Acquisition [Line Items]
Ground leases term	99 years
Ground lease investment initial targeted value of ground lease of combined value	45.00%
Ground lease, ratio of property net operating income to ground lease payments due	4.5
Percentage cap for Ground Lease rent increases based on consumer price index	3.50%
Safehold Operating Partnership LP \| Limited Partner
Business Acquisition [Line Items]
Ownership interest by shareholders' (percent)	100.00%
General partner interests ownership interest	100.00%

Percentage cap for Ground Lease rent increases based on consumer price index (CPI).

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- Definition

Ground Lease Investments, Initial Target Value of Ground Leases Regardless of Improvements, Percent

+ References

No definition available.

+ Details

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- Definition

Ground Lease, Ratio of Property Net Operating Income to Ground Lease Payment Due

+ References

No definition available.

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- Definition

Ground Leases, Term

+ References

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

Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

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- Definition

Percentage investment held by members or limited partners of limited liability company (LLC) or limited partnership (LP).

+ References

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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8672-108599

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