Employee Benefit Plans (Changes In Defined Benefit Obligation And Fair Value Of Defined Benefit Plan Assets) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets, beginning	$ 1,269
Fair value of plan assets, ending	1,415	$ 1,269
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation, beginning	1,587	2,178
Service cost	41	48	$ 64
Interest cost	76	48	48
Actuarial loss (gain)	83	(575)
Employee contributions	3	3
Curtailments	0	(2)
Settlements	(1)	(1)
Defined Benefit Plan, Benefit Obligation, Business Combination	(1)	0
Benefits paid	(53)	(47)
Foreign currency effects	30	(65)
Benefit obligation, ending	1,765	1,587	2,178
Fair value of plan assets, beginning	1,269	1,742
Actual return on plan assets	121	(438)
Employer contributions	54	60
Employee contributions	3	3
Settlements	(1)	(1)
Benefits Paid	(53)	(47)
Foreign currency effects	22	(50)
Fair value of plan assets, ending	1,415	1,269	1,742
Funded status	(350)	(318)
Prepaid benefit cost	63	60
Accrued benefit liability - current	(19)	(18)
Accrued benefit liability - long-term	(394)	(360)
Net amount recognized in the balance sheet	(350)	(318)
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation, beginning	118	154
Service cost	0	1	1
Interest cost	6	3	2
Actuarial loss (gain)	6	(24)
Curtailments	0	0
Settlements	0	0
Defined Benefit Plan, Benefit Obligation, Business Combination	0	0
Benefits paid	(17)	(16)
Foreign currency effects	0	0
Benefit obligation, ending	113	118	$ 154
Fair value of plan assets, beginning	0
Employer contributions	17	16
Benefits Paid	(17)	(16)
Fair value of plan assets, ending	0	0
Funded status	(113)	(118)
Accrued benefit liability - current	(14)	(14)
Accrued benefit liability - long-term	(99)	(104)
Net amount recognized in the balance sheet	$ (113)	$ (118)