Employee Benefits (Schedule Of Change In Benefit Obligation and Change In Plan Assets) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
United States
Change in plan assets
Fair value of plan assets, beginning of year	$ 563
Fair value of plan assets, end of year	562	$ 563
Foreign Plan
Change in plan assets
Fair value of plan assets, beginning of year	21
Fair value of plan assets, end of year	21	21
Pension Plan | United States
Change in benefit obligation
Benefit obligation, beginning of year	748	703
Benefit obligation assumed with acquisition	0	0
Service cost	3	3	$ 3
Interest cost	11	17	23
Actuarial loss (gain)	(35)	64
Benefits paid	(52)	(39)
Plan amendments	(2)	0
Settlements	0	0
Foreign exchange effects	0	0
Other	0	0
Benefit obligation, end of year	673	748	703
Change in plan assets
Fair value of plan assets, beginning of year	563	526
Actual return	52	78
Employer contribution	2	2
Benefits paid	(52)	(39)
Administrative expenses paid	(3)	(4)
Settlements	0	0
Foreign exchange effects	0	0
Fair value of plan assets, end of year	562	563	526
Funded status, end of year	(111)	(185)
Pension Plan | Foreign Plan
Change in benefit obligation
Benefit obligation, beginning of year	173	144
Benefit obligation assumed with acquisition	1	0
Service cost	2	2	2
Interest cost	1	2	3
Actuarial loss (gain)	(9)	14
Benefits paid	(4)	(4)
Plan amendments	0	0
Settlements	(1)	0
Foreign exchange effects	(11)	13
Other	0	2
Benefit obligation, end of year	152	173	144
Change in plan assets
Fair value of plan assets, beginning of year	21	19
Actual return	1	1
Employer contribution	4	4
Benefits paid	(4)	(4)
Administrative expenses paid	0	0
Settlements	(1)	0
Foreign exchange effects	0	1
Fair value of plan assets, end of year	21	21	19
Funded status, end of year	(131)	(152)
Other Postretirement Benefits Plan | United States
Change in benefit obligation
Benefit obligation, beginning of year	63	65
Service cost	1	1	1
Interest cost	1	1	2
Actuarial loss (gain)	(2)	3
Benefits paid	(8)	(7)
Plan amendments	4	0
Benefit obligation, end of year	59	63	65
Change in plan assets
Fair value of plan assets, beginning of year	0	0
Employer contribution	8	7
Benefits paid	(8)	(7)
Fair value of plan assets, end of year	0	0	0
Funded status, end of year	(59)	(63)
Other Postretirement Benefits Plan | Foreign Plan
Change in benefit obligation
Benefit obligation, beginning of year	4	4
Service cost	0	0	0
Interest cost	0	0	0
Actuarial loss (gain)	(1)	0
Benefits paid	0	0
Plan amendments	0	0
Benefit obligation, end of year	3	4	4
Change in plan assets
Fair value of plan assets, beginning of year	0	0
Employer contribution	0	0
Benefits paid	0	0
Fair value of plan assets, end of year	0	0	$ 0
Funded status, end of year	$ (3)	$ (4)