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Derivative Instruments (Maturity Of The Notional Amounts Of Derivative Financial Instruments) (Details) $ in Millions | 9 Months Ended
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Sep. 30, 2018 USD ($)
Maturity of the notional amounts of derivative financial instruments |  |
Remaining Life Less Than 1 Year | $ 29,151 |
Remaining Life - 1 - 5 Years | 18,673 |
Remaining Life - 6 - 10 Years | 47,943 |
Remaining Life - 11 - 30 Years | 21,262 |
Remaining Life Over - 30 Years | 4,343 |
Remaining Life - Total Years | 121,372 |
Interest rate contracts [Member] |  |
Maturity of the notional amounts of derivative financial instruments |  |
Remaining Life Less Than 1 Year | 10,907 | [1]
Remaining Life - 1 - 5 Years | 14,802 | [1]
Remaining Life - 6 - 10 Years | 47,193 | [1]
Remaining Life - 11 - 30 Years | 20,118 | [1]
Remaining Life Over - 30 Years | 1,213 | [1]
Remaining Life - Total Years | $ 94,233 | [1]
Derivative maturity date | Apr. 01, 2067 |
Foreign currency contracts [Member] |  |
Maturity of the notional amounts of derivative financial instruments |  |
Remaining Life Less Than 1 Year | $ 141 | [2]
Remaining Life - 1 - 5 Years | 256 | [2]
Remaining Life - 6 - 10 Years | 635 | [2]
Remaining Life - 11 - 30 Years | 1,130 | [2]
Remaining Life Over - 30 Years | 10 | [2]
Remaining Life - Total Years | $ 2,172 | [2]
Derivative maturity date | Sep. 01, 2049 |
Equity market contracts [Member] |  |
Maturity of the notional amounts of derivative financial instruments |  |
Remaining Life Less Than 1 Year | $ 18,103 |
Remaining Life - 1 - 5 Years | 3,615 |
Remaining Life - 6 - 10 Years | 115 |
Remaining Life - 11 - 30 Years | 14 |
Remaining Life Over - 30 Years | 3,120 |
Remaining Life - Total Years | $ 24,967 |
[1] | As of September 30, 2018, the latest maturity date for which we were hedging our exposure to the variability in future cash flows for these instruments was April 2067.
[2] | As of September 30, 2018, the latest maturity date for which we were hedging our exposure to the variability in future cash flows for these instruments was September 2049.

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Total notional amounts of derivative financial instruments maturing in 11 - 30 years. + References No definition available. + Details
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- Definition Total notional amounts of derivative financial instruments maturing in 1 - 5 years. + References No definition available. + Details
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- Definition Total notional amounts of derivative financial instruments maturing in 6 - 10 years. + References No definition available. + Details
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- Definition Total notional amounts of derivative financial instruments maturing in less than 1 year. + References No definition available. + Details
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- Definition Total notional amounts of derivative financial instruments with maturity dates over 30 years + References No definition available. + Details
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- References No definition available. + Details
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- Definition Date the derivative contract matures, in CCYY-MM-DD format. + References No definition available. + Details
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- Details
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