Derivative Instruments (Maturity Of The Notional Amounts Of Derivative Financial Instruments) (Details) $ in Millions	6 Months Ended
	Jun. 30, 2023 USD ($)
Maturity of the notional amounts of derivative financial instruments
Remaining Life Less Than 1 Year	$ 175,073
Remaining Life - 1 - 5 Years	83,957
Remaining Life - 6 - 10 Years	30,802
Remaining Life - 11 - 30 Years	22,902
Remaining Life - Over 30 Years	13,628
Remaining Life - Total Years	326,362
Interest Rate Contracts [Member]
Maturity of the notional amounts of derivative financial instruments
Remaining Life Less Than 1 Year	19,186
Remaining Life - 1 - 5 Years	21,463
Remaining Life - 6 - 10 Years	21,929
Remaining Life - 11 - 30 Years	20,802
Remaining Life - Over 30 Years	3,000
Remaining Life - Total Years	$ 86,380
Derivative maturity date	Dec. 18, 2024
Foreign Currency Contracts [Member]
Maturity of the notional amounts of derivative financial instruments
Remaining Life Less Than 1 Year	$ 222
Remaining Life - 1 - 5 Years	918
Remaining Life - 6 - 10 Years	1,632
Remaining Life - 11 - 30 Years	2,091
Remaining Life - Over 30 Years	42
Remaining Life - Total Years	$ 4,905
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	$ 155,638
Remaining Life - 1 - 5 Years	61,524
Remaining Life - 6 - 10 Years	7,241
Remaining Life - 11 - 30 Years	9
Remaining Life - Over 30 Years	10,586
Remaining Life - Total Years	234,998
Commodity [Member]
Maturity of the notional amounts of derivative financial instruments
Remaining Life Less Than 1 Year	27
Remaining Life - Total Years	27
Credit Contracts [Member]
Maturity of the notional amounts of derivative financial instruments
Remaining Life - 1 - 5 Years	52
Remaining Life - Total Years	$ 52