Investment in Real Estate - Schedule of Interest in Real Properties (Detail)	12 Months Ended
Dec. 31, 2025 USD ($) ft² a Property	Sep. 01, 2024
Real Estate Properties [Line Items]
Number of Properties	43
Walgreens Grand Rapids ("GR Property") [Member] \| Grand Rapids, MI [Member]
Real Estate Properties [Line Items]
Ownership Percentage	100.00%
Number of Properties	1
Square Feet \| ft²	14,552
Remaining Lease Term	11 years 7 months 6 days
Acquisition Date	2017-07
Purchase Price \| $	$ 7,936,508
CF Net Lease Portfolio IV DST ("DST Properties") [Member] \| Net Lease DST Properties [Member] \| Various [Member]
Real Estate Properties [Line Items]
Ownership Percentage	3.77%
Number of Properties	7
Square Feet \| ft²	103,537
Remaining Lease Term	10 years 10 months 24 days
Acquisition Date	2017-09
Purchase Price \| $	$ 35,706,642
Daimler Trucks North America Office Building ("FM Property") [Member] \| Fort Mill, SC [Member]
Real Estate Properties [Line Items]
Ownership Percentage	100.00%
Number of Properties	1
Square Feet \| ft²	150,164
Remaining Lease Term	3 years
Acquisition Date	2018-02
Purchase Price \| $	$ 40,000,000
Alliance Data Systems Office Building ("CO Property") [Member] \| Columbus, OH [Member]
Real Estate Properties [Line Items]
Ownership Percentage	100.00%
Number of Properties	1
Square Feet \| ft²	241,493
Remaining Lease Term	6 years 8 months 12 days
Acquisition Date	2018-07
Purchase Price \| $	$ 46,950,000
Hoya Optical Labs of America ("Lewisville Property") [Member] \| Lewisville, TX [Member]
Real Estate Properties [Line Items]
Ownership Percentage	100.00%
Number of Properties	1
Square Feet \| ft²	89,473
Remaining Lease Term	2 years 6 months
Acquisition Date	2018-11
Purchase Price \| $	$ 14,120,000
Williams Sonoma Office Building ("SF Property") [Member] \| San Francisco, CA [Member]
Real Estate Properties [Line Items]
Ownership Percentage	75.00%
Number of Properties	1
Square Feet \| ft²	13,907
Remaining Lease Term	0 years
Acquisition Date	2019-09
Purchase Price \| $	$ 11,600,000
Martin Brower Industrial Buildings ("Buchanan Property") [Member] \| Phoenix, AZ [Member]
Real Estate Properties [Line Items]
Ownership Percentage	100.00%
Number of Properties	1
Square Feet \| ft²	93,302
Remaining Lease Term	6 years 2 months 12 days
Acquisition Date	2019-11
Purchase Price \| $	$ 17,300,000
Multifamily Residential Property [Member]
Real Estate Properties [Line Items]
Remaining Lease Term	1 year
Multifamily Residential Property [Member] \| Keller Property [Member] \| Carrolton, Texas [Member]
Real Estate Properties [Line Items]
Ownership Percentage	5.00%
Number of Properties	1
Square Feet \| ft²	255,627
Acquisition Date	2021-02
Purchase Price \| $	$ 56,500,000
Multifamily Residential Property [Member] \| Summerfield Property [Member] \| Landover, MD [Member]
Real Estate Properties [Line Items]
Ownership Percentage	100.00%
Number of Properties	1
Square Feet \| ft²	452,876
Acquisition Date	2021-03
Purchase Price \| $	$ 115,500,000
Multifamily Residential Property [Member] \| Kacey Property [Member] \| Kingwood, Texas [Member]
Real Estate Properties [Line Items]
Ownership Percentage	10.00%
Number of Properties	1
Square Feet \| ft²	296,991
Acquisition Date	2021-11
Purchase Price \| $	$ 67,000,000
Multifamily Residential Property [Member] \| Industry Property [Member] \| Columbus, OH [Member]
Real Estate Properties [Line Items]
Ownership Percentage	10.00%
Number of Properties	1
Square Feet \| ft²	187,678
Acquisition Date	2021-12
Purchase Price \| $	$ 81,000,000
Multifamily Residential Property [Member] \| Longmire Property [Member] \| Conroe, TX [Member]
Real Estate Properties [Line Items]
Ownership Percentage	49.37%
Number of Properties	1
Square Feet \| ft²	231,720
Acquisition Date	2022-04
Purchase Price \| $	$ 43,400,000
Multifamily Residential Property [Member] \| West End Property [Member] \| Lenexa, KS [Member]
Real Estate Properties [Line Items]
Ownership Percentage	10.00%
Number of Properties	1
Square Feet \| ft²	299,813
Acquisition Date	2022-08
Purchase Price \| $	$ 69,375,000
Multifamily Residential Property [Member] \| Palms Property [Member] \| Houston, TX [Member]
Real Estate Properties [Line Items]
Ownership Percentage	10.00%
Number of Properties	1
Square Feet \| ft²	222,672
Acquisition Date	2022-08
Purchase Price \| $	$ 48,000,000
Multifamily Residential Property [Member] \| Pearland Property [Member] \| Pearland, TX [Member]
Real Estate Properties [Line Items]
Ownership Percentage	5.00%
Number of Properties	1
Square Feet \| ft²	219,624
Acquisition Date	2023-06
Purchase Price \| $	$ 40,500,000
Amazon Last Mile Cleveland [Member] \| Madison Ave Property [Member] \| Cleveland, OH [Member]
Real Estate Properties [Line Items]
Ownership Percentage	100.00%
Number of Properties	1
Square Feet \| ft²	168,750
Remaining Lease Term	5 years 2 months 12 days
Acquisition Date	2021-05
Purchase Price \| $	$ 30,800,000
Valencia California [Member] \| Valencia Property [Member] \| Santa Clarita, CA [Member]
Real Estate Properties [Line Items]
Ownership Percentage	10.00%
Number of Properties	1
Square Feet \| ft²	180,415
Remaining Lease Term	10 years
Acquisition Date	2021-07
Purchase Price \| $	$ 92,000,000
De Anza Plaza Office Buildings [Member] \| De Anza Property [Member] \| Cupertino, CA [Member]
Real Estate Properties [Line Items]
Ownership Percentage	100.00%
Number of Properties	1
Square Feet \| ft²	83,959
Remaining Lease Term	5 years 7 months 6 days
Acquisition Date	2021-07
Purchase Price \| $	$ 63,750,000
Mars Petcare Dry/Cold Storage Facility [Member] \| Fisher Road Property [Member] \| Columbus, OH [Member]
Real Estate Properties [Line Items]
Ownership Percentage	100.00%
Number of Properties	1
Square Feet \| ft²	465,256
Remaining Lease Term	6 years 4 months 24 days
Acquisition Date	2022-03
Purchase Price \| $	$ 58,000,000
Office Tower \| ON3 Property [Member] \| Nutley, NJ [Member]
Real Estate Properties [Line Items]
Ownership Percentage	10.00%
Number of Properties	1
Square Feet \| ft²	332,818
Remaining Lease Term	13 years
Acquisition Date	2022-04
Purchase Price \| $	$ 131,667,000
Mount Comfort Land [Member] \| Greenfield, IN [Member]
Real Estate Properties [Line Items]
Ownership Percentage	100.00%
Number of Properties	0
Square Feet \| a	1
Remaining Lease Term	10 years 3 months 18 days
Acquisition Date	2022-10
Purchase Price \| $	$ 445,000
CF WAG Portfolio DST [Member]
Real Estate Properties [Line Items]
Ownership Percentage		100.00%
CF WAG Portfolio DST [Member] \| WAG Portfolio Properties [Member] \| Various [Member]
Real Estate Properties [Line Items]
Ownership Percentage	100.00%
Number of Properties	8
Square Feet \| ft²	118,339
Remaining Lease Term	10 years 10 months 24 days
Acquisition Date	2024-09
Purchase Price \| $	$ 42,000,000
WAG MH Property [Member] \| WAG MH Properties [Member] \| Various [Member]
Real Estate Properties [Line Items]
Ownership Percentage	100.00%
Number of Properties	9
Square Feet \| ft²	139,305
Remaining Lease Term	10 years 10 months 24 days
Acquisition Date	2025-01
Purchase Price \| $	$ 50,130,000

Business acquisition, effective month and year.

No definition available.

Name:	cfit_BusinessAcquisitionEffectiveMonthAndYear
Namespace Prefix:	cfit_
Data Type:	xbrli:gYearMonthItemType
Balance Type:	na
Period Type:	duration

- Definition

Area of a real estate property.

+ References

No definition available.

+ Details

Name:	us-gaap_AreaOfRealEstateProperty
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:areaItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of asset acquired in excess of (less than) liability assumed plus goodwill in business combination and recognized at acquisition date.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 805
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479907/805-20-50-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 805
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479907/805-20-50-1

+ Details

Name:	us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-28

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481687/323-10-50-3

+ Details

Name:	us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The number of real estate properties owned as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfRealEstateProperties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 53
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479589/842-20-55-53

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (g)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-4

+ Details

Name:	us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- 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

Name:	us-gaap_RealEstatePropertiesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration