Derivative Instruments (Maturity Of The Notional Amounts Of Derivative Financial Instruments) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2022 USD ($)
Maturity of the notional amounts of derivative financial instruments
Remaining Life Less Than 1 Year	$ 82,565
Remaining Life - 1 - 5 Years	53,098
Remaining Life - 6 - 10 Years	31,682
Remaining Life - 11 - 30 Years	19,980
Remaining Life Over - 30 Years	12,195
Remaining Life - Total Years	199,520
Interest Rate Contracts [Member]
Maturity of the notional amounts of derivative financial instruments
Remaining Life Less Than 1 Year	30,996
Remaining Life - 1 - 5 Years	30,208
Remaining Life - 6 - 10 Years	21,979
Remaining Life - 11 - 30 Years	18,078
Remaining Life Over - 30 Years	1,213
Remaining Life - Total Years	$ 102,474
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	$ 321
Remaining Life - 1 - 5 Years	707
Remaining Life - 6 - 10 Years	1,710
Remaining Life - 11 - 30 Years	1,892
Remaining Life Over - 30 Years	197
Remaining Life - Total Years	$ 4,827
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	$ 51,238
Remaining Life - 1 - 5 Years	22,177
Remaining Life - 6 - 10 Years	7,741
Remaining Life - 11 - 30 Years	10
Remaining Life Over - 30 Years	10,785
Remaining Life - Total Years	91,951
Commodity Contract [Member]
Maturity of the notional amounts of derivative financial instruments
Remaining Life Less Than 1 Year	10
Remaining Life - Total Years	10
Credit contracts [Member]
Maturity of the notional amounts of derivative financial instruments
Remaining Life - 1 - 5 Years	6
Remaining Life - 6 - 10 Years	252
Remaining Life - Total Years	$ 258