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Derivative Instruments (Maturity Of The Notional Amounts Of Derivative Financial Instruments) (Details) - USD ($) $ in Millions | 12 Months Ended |
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Dec. 31, 2021 | Dec. 31, 2020
Maturity of the notional amounts of derivative financial instruments |  |
Remaining Life Less Than 1 Year | $ 62,823 |
Remaining Life - 1 - 5 Years | 68,201 |
Remaining Life - 6 - 10 Years | 27,165 |
Remaining Life - 11 - 30 Years | 16,234 |
Remaining Life Over - 30 Years | 9,898 |
Remaining Life - Total Years | 184,321 | $ 216,826
Interest Rate Contracts [Member] |  |
Maturity of the notional amounts of derivative financial instruments |  |
Remaining Life Less Than 1 Year | 4,413 |
Remaining Life - 1 - 5 Years | 49,847 |
Remaining Life - 6 - 10 Years | 17,324 |
Remaining Life - 11 - 30 Years | 14,368 |
Remaining Life Over - 30 Years | 1,213 |
Remaining Life - Total Years | $ 87,165 |
Derivative maturity date | Apr. 20, 2067 |
Foreign currency contracts [Member] |  |
Maturity of the notional amounts of derivative financial instruments |  |
Remaining Life Less Than 1 Year | $ 410 |
Remaining Life - 1 - 5 Years | 553 |
Remaining Life - 6 - 10 Years | 1,574 |
Remaining Life - 11 - 30 Years | 1,856 |
Remaining Life Over - 30 Years | 73 |
Remaining Life - Total Years | $ 4,466 |
Derivative maturity date | Jun. 16, 2061 |
Equity market contracts [Member] |  |
Maturity of the notional amounts of derivative financial instruments |  |
Remaining Life Less Than 1 Year | $ 58,000 |
Remaining Life - 1 - 5 Years | 17,752 |
Remaining Life - 6 - 10 Years | 8,267 |
Remaining Life - 11 - 30 Years | 10 |
Remaining Life Over - 30 Years | 8,612 |
Remaining Life - Total Years | 92,641 |
Credit contracts [Member] |  |
Maturity of the notional amounts of derivative financial instruments |  |
Remaining Life - 1 - 5 Years | 49 |
Remaining Life - Total Years | $ 49 |

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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 Nominal or face amount used to calculate payment on derivative. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959 + Details
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