XML 91 R58.htm IDEA: XBRL DOCUMENT v3.25.1
Short-Term and Long-Term Debt - Long-Term Debt (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2025
Dec. 31, 2024
Long-Term Debt [Line Items]    
Long-term debt, outstanding $ 4,217,617 $ 4,216,909
Long-term debt, weighted-average interest rate (percent) 3.05% 2.97%
Fannie Mae    
Long-Term Debt [Line Items]    
Long-term debt, outstanding $ 125,777 $ 128,234
Long-term debt, weighted-average interest rate (percent) 3.33% 3.30%
Unamortized discounts and premiums, fair value adjustments, hedge-related cost basis adjustments, and other cost basis adjustments $ 3,200 $ 3,600
Fannie Mae | Total senior fixed    
Long-Term Debt [Line Items]    
Long-term debt, outstanding $ 91,111 $ 93,495
Long-term debt, weighted-average interest rate (percent) 2.76% 2.66%
Fannie Mae | Senior fixed benchmark notes and bonds    
Long-Term Debt [Line Items]    
Long-term debt, outstanding $ 42,269 $ 44,655
Long-term debt, weighted-average interest rate (percent) 2.92% 2.87%
Fannie Mae | Senior fixed medium-term notes    
Long-Term Debt [Line Items]    
Long-term debt, outstanding $ 42,243 $ 42,208
Long-term debt, weighted-average interest rate (percent) 2.40% 2.21%
Fannie Mae | Senior fixed medium-term notes | Minimum    
Long-Term Debt [Line Items]    
Contractual maturity term 1 year 1 year
Fannie Mae | Senior fixed medium-term notes | Maximum    
Long-Term Debt [Line Items]    
Contractual maturity term 10 years 10 years
Fannie Mae | Senior fixed other debt    
Long-Term Debt [Line Items]    
Long-term debt, outstanding $ 6,599 $ 6,632
Long-term debt, weighted-average interest rate (percent) 3.95% 3.98%
Contractual maturity term 10 years  
Fannie Mae | Total senior floating    
Long-Term Debt [Line Items]    
Long-term debt, outstanding $ 34,666 $ 34,739
Long-term debt, weighted-average interest rate (percent) 4.86% 5.07%
Fannie Mae | Senior floating medium-term notes    
Long-Term Debt [Line Items]    
Long-term debt, outstanding $ 32,435 $ 32,435
Long-term debt, weighted-average interest rate (percent) 4.48% 4.67%
Fannie Mae | Senior floating Connecticut Avenue Securities    
Long-Term Debt [Line Items]    
Long-term debt, outstanding $ 1,968 $ 2,055
Long-term debt, weighted-average interest rate (percent) 10.70% 10.99%
Fannie Mae | Senior floating other debt    
Long-Term Debt [Line Items]    
Long-term debt, outstanding $ 263 $ 249
Long-term debt, weighted-average interest rate (percent) 7.84% 8.10%
Consolidated Trusts    
Long-Term Debt [Line Items]    
Long-term debt, outstanding $ 4,091,840 $ 4,088,675
Long-term debt, weighted-average interest rate (percent) 3.04% 2.96%