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Retirement Benefits (Schedule Of Defined Benefit Plan Net Periodic Benefit Cost Amounts Recorded in Consolidated Statement of Income) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Defined Benefit Plan Disclosure [Line Items] |  |
Compensation and benefits expense (Operating income) | $ (1,445) | $ (1,358)
Other net benefit (credits) cost | (62) | (71)
Pension Benefits |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Compensation and benefits expense (Operating income) | 8 | 10
Other net benefit (credits) cost | (63) | (71)
Total credit | $ (55) | $ (61)

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