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Cover
Dec. 18, 2025
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Dec. 18, 2025
Entity File Number 811-22853
Entity Registrant Name ArrowMark Financial Corp.
Entity Central Index Key 0001578987
Entity Tax Identification Number 90-0934878
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 100 Fillmore Street
Entity Address, Address Line Two Suite 325
Entity Address, City or Town Denver
Entity Address, State or Province CO
Entity Address, Postal Zip Code 80206
City Area Code 303
Local Phone Number 398-2929
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common
Trading Symbol BANX
Security Exchange Name NASDAQ
Entity Emerging Growth Company false