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Derivative Financial Instruments - Additional Information (Detail) $ in Millions	Jun. 30, 2016 USD ($) Counterparty	Dec. 31, 2015 USD ($)
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Decrease in valuation due to net credit risk adjustments	$ 1	$ 1
Decrease in valuation due to liquidity adjustments	29	$ 31
Derivative liability position including accrued interest, net of premium receivable with counterparty	$ 781
Number of counterparties with right to terminate | Counterparty	2

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- Definition

Decrease in valuation due to liquidity adjustments.

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- Definition

Derivative liability position including accrued interest, net of premium receivable with counterparty.

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- Definition

Number of counterparties with right to terminate.

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- Definition

Amount of credit risk valuation adjustment to derivative assets to properly reflect the credit quality of the counterparties.

+ References

No definition available.

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