Derivative Financial Instruments (Counterparty Credit Quality With Respect To Fair Value Of OTC Derivatives Assets) (Details) $ in Thousands	Jun. 30, 2017 USD ($)
Derivative Instruments and Hedging Activities Disclosure [Abstract]
A- or higher	$ 156,240
BBB- to BBB	56,371
BB or lower	74,164
Unrated	59,402
Total OTC derivative assets included in Trading assets	$ 346,177

Fair value of OTC derivatives assets, counterparty credit quality A- or higher.

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Fair value of OTC derivatives assets, counterparty credit quality BB or lower.

No definition available.

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Fair value of OTC derivatives assets, counterparty credit quality BBB- to BBB+.

No definition available.

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Fair value of OTC derivatives assets, counterparty credit quality unrated.

No definition available.

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OTC Derivative Assets Included In Financial Instruments Owned.

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No definition available.

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