Derivative Instruments (Maturity Of The Notional Amounts Of Derivative Financial Instruments) (Details) $ in Millions	6 Months Ended
	Jun. 30, 2022 USD ($)
Maturity of the notional amounts of derivative financial instruments
Remaining Life Less Than 1 Year	$ 79,674
Remaining Life - 1 - 5 Years	53,572
Remaining Life - 6 - 10 Years	30,517
Remaining Life - 11 - 30 Years	19,314
Remaining Life Over - 30 Years	10,699
Remaining Life - Total Years	193,776
Interest Rate Contracts [Member]
Maturity of the notional amounts of derivative financial instruments
Remaining Life Less Than 1 Year	24,276
Remaining Life - 1 - 5 Years	29,824
Remaining Life - 6 - 10 Years	21,587
Remaining Life - 11 - 30 Years	17,290
Remaining Life Over - 30 Years	1,213
Remaining Life - Total Years	$ 94,190
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	$ 295
Remaining Life - 1 - 5 Years	633
Remaining Life - 6 - 10 Years	1,627
Remaining Life - 11 - 30 Years	2,014
Remaining Life Over - 30 Years	94
Remaining Life - Total Years	$ 4,663
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	$ 55,093
Remaining Life - 1 - 5 Years	22,871
Remaining Life - 6 - 10 Years	7,303
Remaining Life - 11 - 30 Years	10
Remaining Life Over - 30 Years	9,392
Remaining Life - Total Years	94,669
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	244
Remaining Life - Total Years	$ 244