Employee Benefits (Schedule Of Net Benefit Costs, Other Changes in Plan Assets and Benefit Obligation Recognized In Other Comprehensive Income) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Settlement benefits	$ (23)	$ (14)
Expected net loss, Next Fiscal Year	1
Defined Benefit Plan, Expected Amortization of Gain (Loss), Next Fiscal Year	2
Other Postretirement Benefits Plan
Defined Benefit Plan Disclosure [Line Items]
Expected net loss, Next Fiscal Year	1
Defined Benefit Plan, Expected Amortization of Gain (Loss), Next Fiscal Year	0
United States | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	3	3	$ 3
Administrative expenses	3	3	4
Interest cost	11	17	23
Expected return on plan assets	(38)	(35)	(33)
Net amortization	0	0	0
Net periodic benefit cost (gain)	(21)	(12)	(3)
Net loss (gain) emerging	(49)	22	20
Prior service credit	(2)	0	0
Other Comprehensive Income (Loss), Defined Benefit Plan, Effect on plan change, before tax	0	0	0
Amortization of net gain (loss)	0	0	0
Total recognized in OCI	(51)	22	20
Total net periodic benefit cost and OCI	(72)	10	17
United States | Other Postretirement Benefits Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	1	1	1
Interest cost	1	1	2
Net periodic benefit cost (gain)	2	2	3
Net loss (gain) emerging	(2)	3	3
Prior service credit	4	0	0
Total recognized in OCI	2	3	3
Total net periodic benefit cost and OCI	4	5	6
Foreign Plan | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	2	2	2
Administrative expenses	0	0	0
Interest cost	1	2	3
Expected return on plan assets	(1)	(1)	(1)
Net amortization	3	1	0
Net periodic benefit cost (gain)	5	4	4
Net loss (gain) emerging	(9)	13	13
Prior service credit	0	0	0
Other Comprehensive Income (Loss), Defined Benefit Plan, Effect on plan change, before tax	0	0	(4)
Amortization of net gain (loss)	(2)	(1)	0
Total recognized in OCI	(11)	12	9
Total net periodic benefit cost and OCI	(6)	16	13
Foreign Plan | Other Postretirement Benefits Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0	0
Interest cost	0	0	0
Net periodic benefit cost (gain)	0	0	0
Net loss (gain) emerging	(1)	0	0
Prior service credit	0	0	0
Total recognized in OCI	(1)	0	0
Total net periodic benefit cost and OCI	$ (1)	$ 0	$ 0