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USD ($)
USD ($) / shares
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USD ($)
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3/31/2011
USD ($)
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12/31/2010
USD ($)
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3/31/2011
USD ($)
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12/31/2010
USD ($)
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As of March 31, 2011 and December 31, 2010, fair value hedges of long-term debt increased the carrying value of long-term debt presented in our consolidated statement of condition by $76 million and $81 million, respectively. 212Derivative Financial Instruments (Notional Amount of Interest-Rate Swap Agreements Designated as Fair Value and Cash Flow Hedges) (Details) (USD $)MillionsUnKnownUnKnownUnKnownfalsetrue