v3.26.1
Cover Page
3 Months Ended
Mar. 31, 2026
shares
Cover [Abstract]  
Document Type 10-Q
Document Quarterly Report true
Document Period End Date Mar. 31, 2026
Document Transition Report false
Entity File Number 333-295074
Entity Registrant Name BASIN ELECTRIC POWER COOPERATIVE
Entity Incorporation, State or Country Code ND
Entity Tax Identification Number 45-0277395
Entity Address, Address Line One 1717 East Interstate Avenue
Entity Address, City or Town Bismarck
Entity Address, State or Province ND
Entity Address, Postal Zip Code 58503
City Area Code 701
Local Phone Number 223 0441
No Trading Symbol Flag true
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Filer Category Non-accelerated Filer
Entity Small Business false
Entity Emerging Growth Company false
Entity Shell Company false
Entity Common Stock, Shares Outstanding 0
Central Index Key 0000720515
Current Fiscal Year End Date --12-31
Document Fiscal Year Focus 2026
Document Fiscal Period Focus Q1
Amendment Flag false