Pension And Other Postretirement Employee Benefit Plans (Components of Net Periodic Pension and Postretirement Benefit (Cost)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Pension benefit plans | U.S. Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 0
Interest cost	(44)	(69)
Expected return on plan assets	123	121
Amortization of prior service (cost) credit	(1)	(1)
Amortization of net loss	(46)	(37)
Curtailment and settlement gains (losses) recognized	0	0
Net periodic pension benefit (cost)	32	14
Pension benefit plans | Non-U.S. Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	(44)	(40)
Interest cost	(19)	(22)
Expected return on plan assets	42	37
Amortization of prior service (cost) credit	1	1
Amortization of net loss	(11)	(10)
Curtailment and settlement gains (losses) recognized	(1)	(1)	$ (7)
Net periodic pension benefit (cost)	(32)	(35)
Other postretirement benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0
Interest cost	(2)	(4)
Expected return on plan assets	0	0
Amortization of prior service (cost) credit	2	2
Amortization of net loss	(2)	(1)
Curtailment and settlement gains (losses) recognized	0	0
Net periodic pension benefit (cost)	$ (2)	$ (3)