v3.26.3
Document And Entity Information
Oct. 28, 2026
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Oct. 28, 2026
Entity Registrant Name Macquarie Infrastructure Income Opportunities Fund
Entity Central Index Key 0002050809
Entity Emerging Growth Company true
Entity File Number 000-56868
Entity Incorporation, State or Country Code DE
Entity Tax Identification Number 41-6643038
Entity Address, Address Line One 660 Fifth Avenue
Entity Address, City or Town New York
Entity Address, State or Province NY
Entity Address, Postal Zip Code 10103
City Area Code 917
Local Phone Number 847-5283
Entity Information, Former Legal or Registered Name Not Applicable
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Ex Transition Period false
Title of 12(b) Security N/A
No Trading Symbol Flag true
Security Exchange Name NONE