(Net Periodic Pension Expense For Qualified And Nonqualified U.S. Defined Benefit Plans) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 85	$ 100	$ 85
Interest cost	338	333	393
Expected return on plan assets	(649)	(705)	(668)
Actuarial loss (gain)	87	138	202
Amortization of prior service cost	23	22	20
Curtailment loss (gain)	0	0	0
Settlement loss	0	0	0
Net periodic pension (income) expense	(116)	(112)	32
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	3	5	5
Interest cost	2	4	6
Expected return on plan assets	(1)	(7)	(8)
Actuarial loss (gain)	1	2	2
Amortization of prior service cost	0	0	0
Curtailment loss (gain)	0	0	(1)
Settlement loss	0	0	1
Net periodic pension (income) expense	$ 5	$ 4	$ 5