XML 36 R133.htm IDEA: XBRL DOCUMENT v2.4.0.8
Fair Value Level 3 Valuation Inputs (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 12 Months Ended 3 Months Ended 3 Months Ended 12 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 12 Months Ended 3 Months Ended 3 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2013
Mortgage commitment derivatives [Member]
Dec. 31, 2012
Mortgage commitment derivatives [Member]
Dec. 31, 2013
Fannie Mae [Member]
Dec. 31, 2012
Fannie Mae [Member]
Dec. 31, 2013
Consolidated Trusts [Member]
Dec. 31, 2012
Consolidated Trusts [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Fannie Mae [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Fannie Mae [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Consolidated Trusts [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Consolidated Trusts [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Consensus Without Inputs [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Consensus Without Inputs [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Internal Model [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Internal Model [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Other Valuation Technique [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Other Valuation Technique [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Appraisals [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Appraisals [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Walk Forwards [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Walk Forwards [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Single-Family [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Single-Family [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Single-Family [Member]
Internal Model [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Single-Family [Member]
Internal Model [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Single-Family [Member]
Other Valuation Technique [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Single-Family [Member]
Other Valuation Technique [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Single-Family [Member]
Accepted Offers [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Single-Family [Member]
Accepted Offers [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Single-Family [Member]
Appraisals [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Single-Family [Member]
Appraisals [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Single-Family [Member]
Walk Forwards [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Single-Family [Member]
Walk Forwards [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Multifamily [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Multifamily [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Multifamily [Member]
Other Valuation Technique [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Multifamily [Member]
Other Valuation Technique [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Multifamily [Member]
Accepted Offers [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Multifamily [Member]
Accepted Offers [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Multifamily [Member]
Appraisals [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Multifamily [Member]
Appraisals [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Multifamily [Member]
Broker Price Opinions [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Multifamily [Member]
Broker Price Opinions [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Multifamily [Member]
Asset Manager Estimate [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Multifamily [Member]
Asset Manager Estimate [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Fannie Mae [Member]
Single-Family [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Fannie Mae [Member]
Single-Family [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Fannie Mae [Member]
Single-Family [Member]
Internal Model [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Fannie Mae [Member]
Single-Family [Member]
Internal Model [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Consolidated Trusts [Member]
Single-Family [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Consolidated Trusts [Member]
Single-Family [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Consolidated Trusts [Member]
Single-Family [Member]
Internal Model [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Measurements, Nonrecurring [Member]
Consolidated Trusts [Member]
Single-Family [Member]
Internal Model [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Agency [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Alt-A private-label securities [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Alt-A private-label securities [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Subprime private-label securities [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Subprime private-label securities [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Mortgage revenue bonds [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Mortgage revenue bonds [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Other [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Other [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus with Inputs [Member]
Alt-A private-label securities [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus with Inputs [Member]
Alt-A private-label securities [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus with Inputs [Member]
Alt-A private-label securities [Member]
Trading securities [Member]
Minimum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus with Inputs [Member]
Alt-A private-label securities [Member]
Trading securities [Member]
Maximum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus with Inputs [Member]
Alt-A private-label securities [Member]
Trading securities [Member]
Weighted Average [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus with Inputs [Member]
Alt-A private-label securities [Member]
Available-for-sale Securities [Member]
Minimum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus with Inputs [Member]
Alt-A private-label securities [Member]
Available-for-sale Securities [Member]
Minimum [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus with Inputs [Member]
Alt-A private-label securities [Member]
Available-for-sale Securities [Member]
Maximum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus with Inputs [Member]
Alt-A private-label securities [Member]
Available-for-sale Securities [Member]
Maximum [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus with Inputs [Member]
Alt-A private-label securities [Member]
Available-for-sale Securities [Member]
Weighted Average [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus with Inputs [Member]
Alt-A private-label securities [Member]
Available-for-sale Securities [Member]
Weighted Average [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus with Inputs [Member]
Subprime private-label securities [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus with Inputs [Member]
Subprime private-label securities [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus with Inputs [Member]
Subprime private-label securities [Member]
Trading securities [Member]
Minimum [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus with Inputs [Member]
Subprime private-label securities [Member]
Trading securities [Member]
Minimum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus with Inputs [Member]
Subprime private-label securities [Member]
Trading securities [Member]
Maximum [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus with Inputs [Member]
Subprime private-label securities [Member]
Trading securities [Member]
Maximum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus with Inputs [Member]
Subprime private-label securities [Member]
Trading securities [Member]
Weighted Average [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus with Inputs [Member]
Subprime private-label securities [Member]
Trading securities [Member]
Weighted Average [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus with Inputs [Member]
Subprime private-label securities [Member]
Available-for-sale Securities [Member]
Minimum [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus with Inputs [Member]
Subprime private-label securities [Member]
Available-for-sale Securities [Member]
Minimum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus with Inputs [Member]
Subprime private-label securities [Member]
Available-for-sale Securities [Member]
Maximum [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus with Inputs [Member]
Subprime private-label securities [Member]
Available-for-sale Securities [Member]
Maximum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus with Inputs [Member]
Subprime private-label securities [Member]
Available-for-sale Securities [Member]
Weighted Average [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus with Inputs [Member]
Subprime private-label securities [Member]
Available-for-sale Securities [Member]
Weighted Average [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus with Inputs [Member]
Other [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus with Inputs [Member]
Other [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus with Inputs [Member]
Other [Member]
Available-for-sale Securities [Member]
Minimum [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus with Inputs [Member]
Other [Member]
Available-for-sale Securities [Member]
Minimum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus with Inputs [Member]
Other [Member]
Available-for-sale Securities [Member]
Maximum [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus with Inputs [Member]
Other [Member]
Available-for-sale Securities [Member]
Maximum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus with Inputs [Member]
Other [Member]
Available-for-sale Securities [Member]
Weighted Average [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus with Inputs [Member]
Other [Member]
Available-for-sale Securities [Member]
Weighted Average [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus Without Inputs [Member]
Agency [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus Without Inputs [Member]
Alt-A private-label securities [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus Without Inputs [Member]
Alt-A private-label securities [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus Without Inputs [Member]
Subprime private-label securities [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus Without Inputs [Member]
Subprime private-label securities [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus Without Inputs [Member]
Other [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consensus Without Inputs [Member]
Other [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Single Vendor With Inputs [Member]
Alt-A private-label securities [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Single Vendor With Inputs [Member]
Alt-A private-label securities [Member]
Trading securities [Member]
Minimum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Single Vendor With Inputs [Member]
Alt-A private-label securities [Member]
Trading securities [Member]
Maximum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Single Vendor With Inputs [Member]
Alt-A private-label securities [Member]
Trading securities [Member]
Weighted Average [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Single Vendor With Inputs [Member]
Alt-A private-label securities [Member]
Available-for-sale Securities [Member]
Minimum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Single Vendor With Inputs [Member]
Alt-A private-label securities [Member]
Available-for-sale Securities [Member]
Maximum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Single Vendor With Inputs [Member]
Alt-A private-label securities [Member]
Available-for-sale Securities [Member]
Weighted Average [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Single Vendor With Inputs [Member]
Subprime private-label securities [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Single Vendor With Inputs [Member]
Subprime private-label securities [Member]
Trading securities [Member]
Minimum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Single Vendor With Inputs [Member]
Subprime private-label securities [Member]
Trading securities [Member]
Maximum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Single Vendor With Inputs [Member]
Subprime private-label securities [Member]
Trading securities [Member]
Weighted Average [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Single Vendor With Inputs [Member]
Subprime private-label securities [Member]
Available-for-sale Securities [Member]
Minimum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Single Vendor With Inputs [Member]
Subprime private-label securities [Member]
Available-for-sale Securities [Member]
Maximum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Single Vendor With Inputs [Member]
Subprime private-label securities [Member]
Available-for-sale Securities [Member]
Weighted Average [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Single Vendor With Inputs [Member]
Mortgage revenue bonds [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Single Vendor With Inputs [Member]
Mortgage revenue bonds [Member]
Available-for-sale Securities [Member]
Minimum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Single Vendor With Inputs [Member]
Mortgage revenue bonds [Member]
Available-for-sale Securities [Member]
Maximum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Single Vendor With Inputs [Member]
Mortgage revenue bonds [Member]
Available-for-sale Securities [Member]
Weighted Average [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Dealer Mark [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Dealer Mark [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Alt-A private-label securities [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Alt-A private-label securities [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Alt-A private-label securities [Member]
Trading securities [Member]
Minimum [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Alt-A private-label securities [Member]
Trading securities [Member]
Minimum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Alt-A private-label securities [Member]
Trading securities [Member]
Maximum [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Alt-A private-label securities [Member]
Trading securities [Member]
Maximum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Alt-A private-label securities [Member]
Trading securities [Member]
Weighted Average [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Alt-A private-label securities [Member]
Trading securities [Member]
Weighted Average [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Alt-A private-label securities [Member]
Available-for-sale Securities [Member]
Minimum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Alt-A private-label securities [Member]
Available-for-sale Securities [Member]
Minimum [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Alt-A private-label securities [Member]
Available-for-sale Securities [Member]
Maximum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Alt-A private-label securities [Member]
Available-for-sale Securities [Member]
Maximum [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Alt-A private-label securities [Member]
Available-for-sale Securities [Member]
Weighted Average [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Alt-A private-label securities [Member]
Available-for-sale Securities [Member]
Weighted Average [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Subprime private-label securities [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Subprime private-label securities [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Subprime private-label securities [Member]
Trading securities [Member]
Minimum [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Subprime private-label securities [Member]
Trading securities [Member]
Minimum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Subprime private-label securities [Member]
Trading securities [Member]
Maximum [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Subprime private-label securities [Member]
Trading securities [Member]
Maximum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Subprime private-label securities [Member]
Trading securities [Member]
Weighted Average [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Subprime private-label securities [Member]
Trading securities [Member]
Weighted Average [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Subprime private-label securities [Member]
Available-for-sale Securities [Member]
Minimum [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Subprime private-label securities [Member]
Available-for-sale Securities [Member]
Minimum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Subprime private-label securities [Member]
Available-for-sale Securities [Member]
Maximum [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Subprime private-label securities [Member]
Available-for-sale Securities [Member]
Maximum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Subprime private-label securities [Member]
Available-for-sale Securities [Member]
Weighted Average [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Subprime private-label securities [Member]
Available-for-sale Securities [Member]
Weighted Average [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Mortgage revenue bonds [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Mortgage revenue bonds [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Mortgage revenue bonds [Member]
Trading securities [Member]
Minimum [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Mortgage revenue bonds [Member]
Trading securities [Member]
Minimum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Mortgage revenue bonds [Member]
Trading securities [Member]
Maximum [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Mortgage revenue bonds [Member]
Trading securities [Member]
Maximum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Mortgage revenue bonds [Member]
Trading securities [Member]
Weighted Average [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Mortgage revenue bonds [Member]
Trading securities [Member]
Weighted Average [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Mortgage revenue bonds [Member]
Available-for-sale Securities [Member]
Minimum [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Mortgage revenue bonds [Member]
Available-for-sale Securities [Member]
Minimum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Mortgage revenue bonds [Member]
Available-for-sale Securities [Member]
Maximum [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Mortgage revenue bonds [Member]
Available-for-sale Securities [Member]
Maximum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Mortgage revenue bonds [Member]
Available-for-sale Securities [Member]
Weighted Average [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Mortgage revenue bonds [Member]
Available-for-sale Securities [Member]
Weighted Average [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Other [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Other [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Other [Member]
Trading securities [Member]
Minimum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Other [Member]
Trading securities [Member]
Maximum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Other [Member]
Trading securities [Member]
Weighted Average [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Other [Member]
Available-for-sale Securities [Member]
Minimum [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Other [Member]
Available-for-sale Securities [Member]
Minimum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Other [Member]
Available-for-sale Securities [Member]
Maximum [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Other [Member]
Available-for-sale Securities [Member]
Maximum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Other [Member]
Available-for-sale Securities [Member]
Weighted Average [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Discounted Cash Flow with Inputs [Member]
Other [Member]
Available-for-sale Securities [Member]
Weighted Average [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Internal Model [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Internal Model [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Other Valuation Technique [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Other Valuation Technique [Member]
Agency [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Other Valuation Technique [Member]
Agency [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Other Valuation Technique [Member]
Alt-A private-label securities [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Other Valuation Technique [Member]
Subprime private-label securities [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Other Valuation Technique [Member]
Subprime private-label securities [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Other Valuation Technique [Member]
Mortgage revenue bonds [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Other Valuation Technique [Member]
Mortgage revenue bonds [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Other Valuation Technique [Member]
Other [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Other Valuation Technique [Member]
Other [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Single Vendor Without Inputs [Member]
Agency [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Single Vendor Without Inputs [Member]
Alt-A private-label securities [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Single Vendor Without Inputs [Member]
Alt-A private-label securities [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Single Vendor Without Inputs [Member]
Subprime private-label securities [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Single Vendor Without Inputs [Member]
Subprime private-label securities [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Single Vendor Without Inputs [Member]
Mortgage revenue bonds [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Single Vendor Without Inputs [Member]
Mortgage revenue bonds [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Single Vendor Without Inputs [Member]
Other [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Fannie Mae [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Fannie Mae [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Fannie Mae [Member]
Senior Floating [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Fannie Mae [Member]
Senior Floating [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Fannie Mae [Member]
Consensus with Inputs [Member]
Senior Floating [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Fannie Mae [Member]
Consensus with Inputs [Member]
Long-term debt [Member]
Minimum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Fannie Mae [Member]
Consensus with Inputs [Member]
Long-term debt [Member]
Maximum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Fannie Mae [Member]
Consensus with Inputs [Member]
Long-term debt [Member]
Weighted Average [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Fannie Mae [Member]
Discounted Cash Flow without Inputs [Member]
Senior Floating [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Fannie Mae [Member]
Discounted Cash Flow without Inputs [Member]
Senior Floating [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Consensus with Inputs [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Consensus with Inputs [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Consensus with Inputs [Member]
Long-term debt [Member]
Minimum [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Consensus with Inputs [Member]
Long-term debt [Member]
Minimum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Consensus with Inputs [Member]
Long-term debt [Member]
Maximum [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Consensus with Inputs [Member]
Long-term debt [Member]
Maximum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Consensus with Inputs [Member]
Long-term debt [Member]
Weighted Average [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Consensus with Inputs [Member]
Long-term debt [Member]
Weighted Average [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Consensus Without Inputs [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Consensus Without Inputs [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Discounted Cash Flow with Inputs [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Discounted Cash Flow with Inputs [Member]
Long-term debt [Member]
Minimum [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Discounted Cash Flow with Inputs [Member]
Long-term debt [Member]
Maximum [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Discounted Cash Flow with Inputs [Member]
Long-term debt [Member]
Weighted Average [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Other Valuation Technique [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Single Vendor Without Inputs [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Single Vendor Without Inputs [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Single-Family [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Single-Family [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Single-Family [Member]
Build-Up [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Single-Family [Member]
Build-Up [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Single-Family [Member]
Build-Up [Member]
Mortgage Loans [Member]
Minimum [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Single-Family [Member]
Build-Up [Member]
Mortgage Loans [Member]
Minimum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Single-Family [Member]
Build-Up [Member]
Mortgage Loans [Member]
Maximum [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Single-Family [Member]
Build-Up [Member]
Mortgage Loans [Member]
Maximum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Single-Family [Member]
Build-Up [Member]
Mortgage Loans [Member]
Weighted Average [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Single-Family [Member]
Build-Up [Member]
Mortgage Loans [Member]
Weighted Average [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Single-Family [Member]
Consensus with Inputs [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Single-Family [Member]
Consensus with Inputs [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Single-Family [Member]
Consensus with Inputs [Member]
Mortgage Loans [Member]
Minimum [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Single-Family [Member]
Consensus with Inputs [Member]
Mortgage Loans [Member]
Minimum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Single-Family [Member]
Consensus with Inputs [Member]
Mortgage Loans [Member]
Maximum [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Single-Family [Member]
Consensus with Inputs [Member]
Mortgage Loans [Member]
Maximum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Single-Family [Member]
Consensus with Inputs [Member]
Mortgage Loans [Member]
Weighted Average [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Single-Family [Member]
Consensus with Inputs [Member]
Mortgage Loans [Member]
Weighted Average [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Single-Family [Member]
Consensus Without Inputs [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Single-Family [Member]
Consensus Without Inputs [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Single-Family [Member]
Discounted Cash Flow with Inputs [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Single-Family [Member]
Discounted Cash Flow with Inputs [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Single-Family [Member]
Discounted Cash Flow with Inputs [Member]
Mortgage Loans [Member]
Minimum [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Single-Family [Member]
Discounted Cash Flow with Inputs [Member]
Mortgage Loans [Member]
Minimum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Single-Family [Member]
Discounted Cash Flow with Inputs [Member]
Mortgage Loans [Member]
Maximum [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Single-Family [Member]
Discounted Cash Flow with Inputs [Member]
Mortgage Loans [Member]
Maximum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Single-Family [Member]
Discounted Cash Flow with Inputs [Member]
Mortgage Loans [Member]
Weighted Average [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Single-Family [Member]
Discounted Cash Flow with Inputs [Member]
Mortgage Loans [Member]
Weighted Average [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Single-Family [Member]
Other Valuation Technique [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Single-Family [Member]
Single Vendor Without Inputs [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Multifamily [Member]
Build-Up [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Multifamily [Member]
Build-Up [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Multifamily [Member]
Build-Up [Member]
Mortgage Loans [Member]
Minimum [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Multifamily [Member]
Build-Up [Member]
Mortgage Loans [Member]
Minimum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Multifamily [Member]
Build-Up [Member]
Mortgage Loans [Member]
Maximum [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Multifamily [Member]
Build-Up [Member]
Mortgage Loans [Member]
Maximum [Member]
Dec. 31, 2013
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Multifamily [Member]
Build-Up [Member]
Mortgage Loans [Member]
Weighted Average [Member]
Dec. 31, 2012
Significant Unobservable Inputs (Level 3) [Member]
Recurring Fair Value Measurements [Member]
Consolidated Trusts [Member]
Multifamily [Member]
Build-Up [Member]
Mortgage Loans [Member]
Weighted Average [Member]
Fair Value Inputs, Quantitative Information [Line Items]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
Mortgage loans held for sale, at lower of cost or fair value                 $ 195 $ 208         $ 132 $ 135 $ 132 $ 135                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
Default Rate (%)                                                                                                                                               6.90% [1],[2] 10.40% [1],[2] 8.90% [1],[2] 0.00% [1] 0.10% [1],[3] 17.70% [1] 10.30% [1],[3] 3.60% [1] 3.50% [1],[3]     3.00% [1],[3] 10.90% [1] 9.20% [1],[3] 23.00% [1] 6.40% [1],[3] 16.00% [1] 0.00% [1],[3] 0.00% [1] 36.80% [1],[3] 27.40% [1] 7.40% [1],[3] 15.40% [1]     0.10% [1],[3] 0.00% [1] 5.00% [1],[3] 5.00% [1] 5.00% [1],[3] 4.70% [1]                 6.00% [1],[3] 10.80% [1],[3] 8.70% [1],[3] 0.90% [1],[3] 6.40% [1],[3] 3.90% [1],[3]   3.10% [1],[3] 7.50% [1],[3] 3.90% [1],[3] 1.80% [1],[3] 11.00% [1],[3] 7.40% [1],[3]                 4.00% [1],[3] 5.70% [1] 6.90% [1],[3] 17.60% [1] 6.50% [1],[3] 12.50% [1] 0.00% [1] 2.30% [1],[3] 23.60% [1] 10.10% [1],[3] 6.40% [1] 5.10% [1],[3]     6.90% [1],[3] 14.10% [1] 6.90% [1],[3] 20.40% [1] 6.90% [1],[3] 18.70% [1] 0.70% [1],[3] 0.00% [1] 7.60% [1],[3] 24.30% [1] 5.10% [1],[3] 15.70% [1]                                       5.00% [1],[3] 4.00% [1] 5.00% [1] 10.00% [1] 5.00% [1] 5.00% [1]                                                   0.20% [1] 0.20% [1] 0.20% [1]             1.10% [1] 0.00% [1] 4.70% [1] 9.00% [1] 3.20% [1] 6.20% [1]       0.00% [1] 10.00% [1] 5.80% [1]               0.10% [1] 0.10% [1] 95.60% [1] 99.30% [1] 15.70% [1] 18.40% [1]     1.10% [1] 0.00% [1] 4.70% [1] 9.00% [1] 3.20% [1] 6.40% [1]         1.20% [1] 0.00% [1] 15.70% [1] 8.50% [1] 7.00% [1] 6.00% [1]                    
Prepayment Speed (%)                                                                                                                                               1.90% [1] 2.50% [1] 2.20% [1] 0.20% [1] 0.10% [1] 41.30% [1] 32.90% [1] 10.00% [1] 9.90% [1]     1.40% [1] 0.30% [1] 2.20% [1] 7.90% [1] 1.90% [1] 2.60% [1] 0.30% [1] 0.00% [1] 9.70% [1] 14.40% [1] 2.30% [1] 3.00% [1]     3.00% [1] 1.00% [1] 11.40% [1] 14.10% [1] 3.00% [1] 3.60% [1]                 4.10% [1] 5.40% [1] 4.60% [1] 9.30% [1] 11.90% [1] 11.30% [1]   1.80% [1] 2.50% [1] 2.00% [1] 1.00% [1] 9.40% [1] 2.00% [1]                 1.90% [1] 0.60% [1] 3.40% [1] 4.00% [1] 2.20% [1] 1.70% [1] 0.00% [1] 1.20% [1] 20.80% [1] 7.00% [1] 7.40% [1] 3.40% [1]     0.10% [1] 3.40% [1] 0.10% [1] 8.30% [1] 0.10% [1] 5.60% [1] 0.20% [1] 0.00% [1] 12.50% [1] 10.90% [1] 4.10% [1] 2.90% [1]                                       10.00% [1] 0.20% [1] 10.00% [1] 10.00% [1] 10.00% [1] 3.00% [1]                                                   8.40% [1] 8.40% [1] 8.40% [1]             0.20% [1] 1.70% [1] 16.70% [1] 14.40% [1] 15.20% [1] 10.90% [1]       0.00% [1] 100.00% [1] 36.90% [1]               2.30% [1] 4.40% [1] 37.60% [1] 92.00% [1] 14.10% [1] 19.40% [1]     0.20% [1] 1.70% [1] 16.70% [1] 14.40% [1] 15.20% [1] 10.40% [1]         1.90% [1] 1.70% [1] 16.70% [1] 14.40% [1] 7.00% [1] 5.30% [1]                    
Severity (%)                                                                                                                                               77.30% [1] 97.80% [1] 88.70% [1] 50.00% [1] 7.20% [1] 70.00% [1] 100.00% [1] 54.90% [1] 62.30% [1]     50.40% [1] 80.00% [1] 87.20% [1] 80.00% [1] 74.40% [1] 80.00% [1] 36.80% [1] 65.00% [1] 100.00% [1] 80.00% [1] 81.70% [1] 77.80% [1]     65.00% [1] 65.00% [1] 85.00% [1] 85.00% [1] 84.60% [1] 83.80% [1]                 76.10% [1] 92.70% [1] 83.10% [1] 53.70% [1] 82.60% [1] 68.80% [1]   75.00% [1] 87.20% [1] 75.80% [1] 65.00% [1] 100.00% [1] 82.20% [1]                 42.70% [1] 65.00% [1] 77.30% [1] 70.00% [1] 67.60% [1] 67.60% [1] 50.00% [1] 45.20% [1] 70.00% [1] 79.50% [1] 57.20% [1] 60.50% [1]     75.00% [1] 80.00% [1] 75.00% [1] 80.00% [1] 75.00% [1] 80.00% [1] 43.80% [1] 65.00% [1] 98.00% [1] 80.00% [1] 79.50% [1] 76.70% [1]                                       55.00% [1] 50.00% [1] 55.00% [1] 85.00% [1] 55.00% [1] 84.80% [1]                                                                     63.90% [1] 65.00% [1] 89.50% [1] 70.00% [1] 85.60% [1] 67.50% [1]       50.00% [1] 70.00% [1] 63.40% [1]               0.00% [1] 5.60% [1] 100.00% [1] 97.30% [1] 26.60% [1] 33.30% [1]     63.90% [1] 65.00% [1] 89.50% [1] 70.00% [1] 85.60% [1] 67.10% [1]         58.80% [1] 65.00% [1] 97.70% [1] 70.00% [1] 75.50% [1] 65.00% [1]                    
Spread (bps)                                                                                                                                               2.983% [1] 4.202% [1] 3.663% [1] 3.00% [1] 2.106% [1] 6.34% [1] 4.042% [1] 4.29% [1] 3.367% [1]     3.25% [1] 4.27% [1] 4.25% [1] 6.57% [1] 3.53% [1] 4.885% [1] 1.75% [1] 3.25% [1] 3.75% [1] 6.60% [1] 3.199% [1] 4.937% [1]     2.75% [1] 4.50% [1] 9.25% [1] 7.29% [1] 5.264% [1] 5.858% [1]                 4.143% [1] 4.217% [1] 4.175% [1] 3.00% [1] 4.00% [1] 3.493% [1]   3.25% [1] 3.25% [1] 3.25% [1] 2.75% [1] 3.75% [1] 3.152% [1]   0.00% [1] 4.632% [1] 1.121% [1]         3.254% [1] 5.26% [1] 4.394% [1] 6.12% [1] 4.186% [1] 5.67% [1] 2.88% [1] 2.202% [1] 6.43% [1] 5.00% [1] 4.428% [1] 3.813% [1]     3.25% [1] 4.22% [1] 3.25% [1] 6.37% [1] 3.25% [1] 5.648% [1] 1.75% [1] 2.99% [1] 3.75% [1] 6.54% [1] 2.924% [1] 5.27% [1]     0.35% [1] 2.60% [1] 4.40% [1] 3.75% [1] 3.406% [1] 3.204% [1] 0.055% [1] 0.77% [1] 4.90% [1] 3.75% [1] 3.10% [1] 2.977% [1]     5.25% 5.25% 5.25% 3.00% [1] 4.31% [1] 5.11% [1] 11.54% [1] 4.695% [1] 5.886% [1]                                                   1.71% [1] 4.38% [1] 3.062% [1]             1.75% [1] 4.68% [1] 9.50% [1] 8.51% [1] 2.951% [1] 5.843% [1]       0.98% [1] 10.30% [1] 3.314% [1]                               1.75% [1] 4.68% [1] 9.50% [1] 8.51% [1] 2.939% [1] 5.679% [1]         1.75% [1] 5.07% [1] 3.606% [1] 10.30% [1] 2.521% [1] 7.334% [1]         0.62% [1] 0.77% [1] 2.434% [1] 3.634% [1] 1.143% [1] 1.545% [1]
Trading securities                 2,774 2,286                                                                                                 2,774 2,286 71 [2] 618 104 1,448 1,319 565 675 99 117 325                     400 544                                         44 [2] 85 17 808 355     60             113                         148 87                         50 236                         539 636                         99                           44 [2]         26     117 27 [2]     77 184   39                                                                                                                                        
Available-for-sale securities                 19,012 25,034                                                                                                 19,012 25,034   3,791 6,564 7,068 7,447 5,253 7,837 2,885 3,147 1,948 2,285                   2,981 3,333                         483 534               740 1,231 2,442 2,326 625 1,009 139             442             1,937           420 3,003                         816 1,710                         1,899 1,911                         610 916                         15 [2] 39 [2] 109 65 78 31 205 1,045 688   435 45 322   1,386 5,721 122                                                                                                                                      
Mortgage loans held for investment             14,268 10,800 392,355 466,594 215,960 232,170 176,395 234,424                                                 1,533 1,624 16 34     39 194 248 395 1,230 1,001 19,966 [4] 23,314 [5] 19,966 23,314 79 [4] 227 [5] 79 227                                                                                                                                                                                                                                                                                                                     2,704 2,634                                   2,529 2,459 1,828 1,698             112 302             219 303 310 106             60 50 175 175            
Derivatives 334 [6] 218 [6] 265 156                                                                                                             (40) 14                                                                                                                                       32 144                                                                                                           (64) (130) (8)                                                                                                                                                                        
Long-term debt         (1,308) (793) (14,976) (11,647)     (1,557) (1,056) (13,362) (16,171)                                                                                         (1,473) (1,528)                                                                                                                                                                                                                                                                                             (955) (400) (955) (400) (689)       (266) (400) (518) (1,128) (116) (271)             (227) (370) (330)       (95) (80) (157)                                                                            
Acquired property, net                                                     4,041 3,692 1,049 1,014 118 76 691 787 1,077 467 1,106 1,348 98 74     24 20 65 8 9 46                                                                                                                                                                                                                                                                                                                                                                                                                                                          
Other Assets, Fair Value Disclosure                             121 384     81 203 5 130 26 8 9 43                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
Total assets at fair value                 $ 415,630 $ 495,561         $ 25,970 $ 29,450                                                                                     $ 24,555 $ 30,129                                                                                                                                                                                                                                                                                                                                                                                                                                  
[1] Valuation techniques for which no unobservable inputs are disclosed generally reflect the use of third-party pricing services or dealers, and the range of unobservable inputs applied by these sources is not readily available or cannot be reasonably estimated. Where we have disclosed unobservable inputs for consensus and single vendor techniques, those inputs are based on our validations performed at the security level using discounted cash flows.
[2] Includes Fannie Mae, Freddie Mac and Ginnie Mae securities.
[3] Default Rate as disclosed represents the estimated beginning annualized rate of default and is used as a basis to forecast the future default rates that serve as an input for valuation.
[4] Excludes estimated recoveries from mortgage insurance proceeds.
[5] Includes $73 million of mortgage loans held for sale that were sold, deconsolidated, retained as a mortgage-related security or redesignated to mortgage loans held for investment as of December 31, 2011.
[6] Excludes derivative assets of $1.7 billion and $217 million and derivative liabilities of $1.1 billion and $250 million recognized in our consolidated balance sheets as of December 31, 2013 and 2012, respectively, that are not subject to an enforceable master netting arrangement or similar agreement.