XML 167 R130.htm IDEA: XBRL DOCUMENT v2.4.0.6
Fair Value Fair Value of Financial Instruments (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Carrying Value [Member]
   
Financial assets [Abstract]    
Cash and cash equivalents and restricted cash $ 89,036 $ 68,336
Federal funds sold and securities purchased under agreements to resell or similar arrangements 32,500 46,000
Trading securities 40,695 74,198
Available-for-sale securities 63,181 77,582
Mortgage loans held for sale 464 311
Mortgage loans held for investment 2,948,942 2,898,310
Advances to lenders 7,592 5,538
Derivatives assets at fair value 435 561
Guaranty assets and buy-ups 327 503
Total assets 3,183,172 3,171,339
Financial liabilities [Abstract]    
Derivative liabilities at fair value 705 916
Guaranty obligations 599 811
Total liabilities 3,190,821 3,191,599
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
   
Financial assets [Abstract]    
Cash and cash equivalents and restricted cash 75,786  
Federal funds sold and securities purchased under agreements to resell or similar arrangements 0  
Trading securities 17,950  
Available-for-sale securities 0  
Mortgage loans held for sale 0  
Mortgage loans held for investment 0  
Advances to lenders 0  
Derivatives assets at fair value 0  
Guaranty assets and buy-ups 0  
Total assets 93,736  
Financial liabilities [Abstract]    
Derivative liabilities at fair value 0  
Guaranty obligations 0  
Total liabilities 0  
Significant Other Observable Inputs (Level 2) [Member]
   
Financial assets [Abstract]    
Cash and cash equivalents and restricted cash 13,250  
Federal funds sold and securities purchased under agreements to resell or similar arrangements 32,500  
Trading securities 20,459  
Available-for-sale securities 38,147  
Mortgage loans held for sale 267  
Mortgage loans held for investment 2,567,022  
Advances to lenders 6,936  
Derivatives assets at fair value 16,051  
Guaranty assets and buy-ups 0  
Total assets 2,694,632  
Financial liabilities [Abstract]    
Derivative liabilities at fair value 22,590  
Guaranty obligations 0  
Total liabilities 3,347,367  
Significant Unobservable Inputs (Level 3) [Member]
   
Financial assets [Abstract]    
Cash and cash equivalents and restricted cash 0  
Federal funds sold and securities purchased under agreements to resell or similar arrangements 0  
Trading securities 2,286  
Available-for-sale securities 25,034  
Mortgage loans held for sale 208  
Mortgage loans held for investment 466,594  
Advances to lenders 572  
Derivatives assets at fair value 175  
Guaranty assets and buy-ups 692  
Total assets 495,561  
Financial liabilities [Abstract]    
Derivative liabilities at fair value 161  
Guaranty obligations 3,113  
Total liabilities 23,984  
Netting Adjustment [Member]
   
Financial assets [Abstract]    
Cash and cash equivalents and restricted cash 0  
Federal funds sold and securities purchased under agreements to resell or similar arrangements 0  
Trading securities 0  
Available-for-sale securities 0  
Mortgage loans held for sale 0  
Mortgage loans held for investment 0  
Advances to lenders 0  
Derivatives assets at fair value (15,791)  
Guaranty assets and buy-ups 0  
Total assets (15,791)  
Financial liabilities [Abstract]    
Derivative liabilities at fair value (22,046)  
Guaranty obligations 0  
Total liabilities (22,046)  
Estimated Fair Value [Member]
   
Financial assets [Abstract]    
Cash and cash equivalents and restricted cash 89,036 68,336
Federal funds sold and securities purchased under agreements to resell or similar arrangements 32,500 46,000
Trading securities 40,695 74,198
Available-for-sale securities 63,181 77,582
Mortgage loans held for sale 475 325
Mortgage loans held for investment 3,033,616 2,947,021
Advances to lenders 7,508 5,420
Derivatives assets at fair value 435 561
Guaranty assets and buy-ups 692 901
Total assets 3,268,138 3,220,344
Financial liabilities [Abstract]    
Derivative liabilities at fair value 705 916
Guaranty obligations 3,113 3,944
Total liabilities 3,349,305 3,367,255
Fannie Mae [Member]
   
Financial liabilities [Abstract]    
Long-term debt 793 838
Fannie Mae [Member] | Carrying Value [Member]
   
Financial assets [Abstract]    
Mortgage loans held for investment 305,025 322,825
Financial liabilities [Abstract]    
Short-term debt 105,233 146,752
Long-term debt 510,631 585,692
Fannie Mae [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
   
Financial assets [Abstract]    
Mortgage loans held for investment 0  
Financial liabilities [Abstract]    
Short-term debt 0  
Long-term debt 0  
Fannie Mae [Member] | Significant Other Observable Inputs (Level 2) [Member]
   
Financial assets [Abstract]    
Mortgage loans held for investment 39,018  
Financial liabilities [Abstract]    
Short-term debt 105,253  
Long-term debt 534,516  
Fannie Mae [Member] | Significant Unobservable Inputs (Level 3) [Member]
   
Financial assets [Abstract]    
Mortgage loans held for investment 232,170  
Financial liabilities [Abstract]    
Short-term debt 0  
Long-term debt 1,056  
Fannie Mae [Member] | Netting Adjustment [Member]
   
Financial assets [Abstract]    
Mortgage loans held for investment 0  
Financial liabilities [Abstract]    
Short-term debt 0  
Long-term debt 0  
Fannie Mae [Member] | Estimated Fair Value [Member]
   
Financial assets [Abstract]    
Mortgage loans held for investment 271,188 294,996
Financial liabilities [Abstract]    
Short-term debt 105,253 146,782
Long-term debt 535,572 613,983
Consolidated Trusts [Member]
   
Financial assets [Abstract]    
Mortgage loans held for investment 10,800 3,611
Financial liabilities [Abstract]    
Long-term debt 11,647 3,939
Consolidated Trusts [Member] | Carrying Value [Member]
   
Financial assets [Abstract]    
Mortgage loans held for investment 2,643,917 2,575,485
Financial liabilities [Abstract]    
Short-term debt 3,483 4,973
Long-term debt 2,570,170 2,452,455
Consolidated Trusts [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
   
Financial assets [Abstract]    
Mortgage loans held for investment 0  
Financial liabilities [Abstract]    
Short-term debt 0  
Long-term debt 0  
Consolidated Trusts [Member] | Significant Other Observable Inputs (Level 2) [Member]
   
Financial assets [Abstract]    
Mortgage loans held for investment 2,528,004  
Financial liabilities [Abstract]    
Short-term debt 0  
Long-term debt 2,685,008  
Consolidated Trusts [Member] | Significant Unobservable Inputs (Level 3) [Member]
   
Financial assets [Abstract]    
Mortgage loans held for investment 234,424  
Financial liabilities [Abstract]    
Short-term debt 3,483  
Long-term debt 16,171  
Consolidated Trusts [Member] | Netting Adjustment [Member]
   
Financial assets [Abstract]    
Mortgage loans held for investment 0  
Financial liabilities [Abstract]    
Short-term debt 0  
Long-term debt 0  
Consolidated Trusts [Member] | Estimated Fair Value [Member]
   
Financial assets [Abstract]    
Mortgage loans held for investment 2,762,428 2,652,025
Financial liabilities [Abstract]    
Short-term debt 3,483 4,973
Long-term debt $ 2,701,179 $ 2,596,657