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Derivative Instruments (Maturity Of The Notional Amounts Of Derivative Financial Instruments) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2022 USD ($)
Maturity of the notional amounts of derivative financial instruments
Remaining Life Less Than 1 Year	$ 79,579
Remaining Life - 1 - 5 Years	49,998
Remaining Life - 6 - 10 Years	29,280
Remaining Life - 11 - 30 Years	18,949
Remaining Life Over - 30 Years	10,230
Remaining Life - Total Years	188,036
Interest Rate Contracts [Member]
Maturity of the notional amounts of derivative financial instruments
Remaining Life Less Than 1 Year	25,425
Remaining Life - 1 - 5 Years	29,454
Remaining Life - 6 - 10 Years	19,844
Remaining Life - 11 - 30 Years	16,946
Remaining Life Over - 30 Years	1,213
Remaining Life - Total Years	$ 92,882
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	$ 294
Remaining Life - 1 - 5 Years	556
Remaining Life - 6 - 10 Years	1,627
Remaining Life - 11 - 30 Years	1,992
Remaining Life Over - 30 Years	94
Remaining Life - Total Years	$ 4,563
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	$ 53,860
Remaining Life - 1 - 5 Years	19,963
Remaining Life - 6 - 10 Years	7,778
Remaining Life - 11 - 30 Years	11
Remaining Life Over - 30 Years	8,923
Remaining Life - Total Years	90,535
Credit contracts [Member]
Maturity of the notional amounts of derivative financial instruments
Remaining Life - 1 - 5 Years	25
Remaining Life - 6 - 10 Years	31
Remaining Life - Total Years	$ 56

X

- Definition

Total notional amounts of derivative financial instruments maturing in 11 - 30 years.

+ References

No definition available.

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- Definition

Total notional amounts of derivative financial instruments maturing in 1 - 5 years.

+ References

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- Definition

Total notional amounts of derivative financial instruments maturing in 6 - 10 years.

+ References

No definition available.

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- Definition

Total notional amounts of derivative financial instruments maturing in less than 1 year.

+ References

No definition available.

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- Definition

Total notional amounts of derivative financial instruments with maturity dates over 30 years

+ References

No definition available.

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- References

No definition available.

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- Definition

Date the derivative contract matures, in YYYY-MM-DD format.

+ References

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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

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