Other-Than-Temporary Impairment Analysis (Narrative) (Details)	12 Months Ended
Dec. 31, 2019
Other than Temporary Impairment Losses, Investments [Abstract]
Period Assumed For Housing Markets That Have Reached Trough	12 months
Projected Change In The Twelve Month Housing Price Percentage Rate, Maximum Decrease	4.00%
Projected Change In The Twelve Month Housing Price Percentage Rate, Maximum Increase	8.00%
Projected Change In The Short-term Housing Price Percentage Rate, Minimum Increase In Vast Majority Of Markets	2.00%
Projected Change In The Short-term Housing Price Percentage Rate, Maximum Increase In Vast Majority Of Markets	6.00%

Period assumed for housing markets that have reached trough.

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- Definition

The maximum projected percentage rate decrease or minimum projected percentage rate increase for short-term housing prices as forecast by the FHLB OTTI Governance Committee over a 12 month period beginning at the beginning of the quarter for the vast majority of markets.

+ References

No definition available.

+ Details

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The maximum projected percentage rate increase for short-term housing prices as forecast by the FHLB OTTI Governance Committee over a 12 month period beginning at the beginning of the quarter for the vast majority of markets.

+ References

No definition available.

+ Details

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The maximum projected percentage rate decrease for short term housing prices as forecast by the FHLB OTTI Governance Committee over a 12 month period beginning at the beginning of the quarter.

+ References

No definition available.

+ Details

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The maximum projected percentage rate increase for short term housing prices as forecast by the FHLB OTTI Governance Committee over a 12 month period beginning at the beginning of the quarter.

+ References

No definition available.

+ Details

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No definition available.

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