v3.7.0.1
Document and Entity Information
3 Months Ended
Mar. 31, 2017
shares
Entity [Abstract]  
Entity Registrant Name FEDERAL NATIONAL MORTGAGE ASSOCIATION FANNIE MAE
Entity Central Index Key 0000310522
Current Fiscal Year End Date --12-31
Entity Filer Category Large Accelerated Filer
Document Type 10-Q
Document Period End Date Mar. 31, 2017
Document Fiscal Year Focus 2017
Document Fiscal Period Focus Q1
Amendment Flag false
Entity Common Stock, Shares Outstanding 1,158,087,567