SCHEDULE I - Summary of Investments - Other than Investments in Related Parties	12 Months Ended
Dec. 31, 2023
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Abstract]
SCHEDULE I - Summary of Investments - Other than Investments in Related Parties	FIDELIS INSURANCE HOLDINGS LIMITED SCHEDULE I - Summary of Investments - Other than Investments in Related Parties At December 31, 2023 (Expressed in millions of U.S. dollars) *Fidelis Insurance Holdings Limited holds no investments other than cash and cash equivalents

The entire disclosure of information about investment held by insurance company, excluding investment in related party.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-X (SX)
-Number 210
-Section 12
-Subsection 15
-Publisher SEC

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 7
-Subparagraph (SX 210.12-15)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480032/946-320-S99-7

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