(Net Periodic Pension Expense For Qualified And Nonqualified U.S. Defined Benefit Plans) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 100	$ 85	$ 68
Interest cost	333	393	440
Expected return on plan assets	(705)	(668)	(631)
Actuarial loss (gain)	138	202	200
Amortization of prior service cost	22	20	16
Curtailment loss (gain)	0	0	0
Settlement loss	0	0	0
Net periodic pension (income) expense	(112)	32	93
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	5	5	5
Interest cost	4	6	8
Expected return on plan assets	(7)	(8)	(10)
Actuarial loss (gain)	2	2	2
Amortization of prior service cost	0	0	0
Curtailment loss (gain)	0	(1)	(1)
Settlement loss	0	1	2
Net periodic pension (income) expense	$ 4	$ 5	$ 6