Derivative Instruments (Maturity Of The Notional Amounts Of Derivative Financial Instruments) (Details) $ in Millions	Sep. 30, 2022 USD ($)
Maturity of the notional amounts of derivative financial instruments
Remaining Life Less Than 1 Year	$ 82,289
Remaining Life - 1 - 5 Years	53,098
Remaining Life - 6 - 10 Years	31,682
Remaining Life - 11 - 30 Years	19,349
Remaining Life - Over 30 Years	10,982
Remaining Life - Total Years	197,400
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	17,447
Remaining Life - Total Years	100,630
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
Equity Market Contracts [Member]
Maturity of the notional amounts of derivative financial instruments
Remaining Life Less Than 1 Year	50,962
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	91,675
Commodity [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