CONSOLIDATED STATEMENT OF CHANGES IN EQUITY / PARTNERS' CAPITAL (Parenthetical) - $ / shares	3 Months Ended
Jun. 30, 2026	Mar. 31, 2026	Jun. 30, 2025	Mar. 31, 2025
Dividends/Distributions Per Share/Unit	$ 0.500	$ 0.500	$ 0.445	$ 0.445
First Industrial, L.P.
Dividends/Distributions Per Share/Unit	$ 0.500	$ 0.500	$ 0.445	$ 0.445

Aggregate dividends declared during the period for each share of common stock outstanding.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480070/505-10-S50-1

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration