Employee Retirement Benefits (Reconciliation Of The Funded Status For Qualified Plan And SERP) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Retirement Benefits [Abstract]
Other assets	$ 35
Other liabilities		$ (30)
Total	35	(30)
Pension amounts recognized in accumulated other comprehensive income:
Net actuarial (gain) loss	(27)	41
Total	$ (27)	$ 41

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Amount, before tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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