v3.25.2
Document and Entity Information
6 Months Ended
Jun. 30, 2025
shares
Document and Entity Information [Abstract]  
Entity Incorporation, State or Country Code X1
Entity Tax Identification Number 36-6001019
Entity Address, Address Line One 433 West Van Buren Street, Suite 501S
Entity Address, City or Town Chicago,
Entity Address, State or Province IL
Entity Address, Postal Zip Code 60607
Entity Registrant Name Federal Home Loan Bank of Chicago
City Area Code 312
Local Phone Number 565-5700
Entity Central Index Key 0001331451
Current Fiscal Year End Date --12-31
Entity Filer Category Non-accelerated Filer
Document Type 10-Q
Document Quarterly Report true
Document Period End Date Jun. 30, 2025
Document Transition Report false
Entity File Number 000-51401
Document Fiscal Year Focus 2025
Document Fiscal Period Focus Q2
Amendment Flag false
Entity Common Stock, Shares Outstanding 36,881,411
Entity Emerging Growth Company false
Entity Small Business false
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Shell Company false