Pension And Other Postretirement Employee Benefit Plans (Funded Status Of Pension and Postretirement Benefit Plans) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Pension benefit plans
Change in plan assets:
Fair value of plan assets at beginning of year	$ 3,456
Fair value of plan assets at end of year	3,663	$ 3,456
Pension benefit plans | U.S. Pension Benefits
Change in pension benefit obligation:
Benefit obligation at beginning of year	(2,718)	(2,468)
Service cost	0	0
Interest cost	(44)	(69)
Employee/retiree contributions	0	0
Benefits and other expenses paid	167	165
Acquisitions and other	0	(96)
Actuarial gain (loss)	63	(273)
Amendments, settlements and curtailments	0	23
Foreign exchange rate impact	0	0
Benefit obligation at end of year	(2,532)	(2,718)
Change in plan assets:
Fair value of plan assets at beginning of year	2,125	1,866
Actual return on plan assets	335	227
Employer contributions	10	140
Employee/retiree contributions	0	0
Amendments and settlements	0	(22)
Benefits and other expenses paid	(167)	(165)
Acquisitions and other	0	79
Foreign exchange rate impact	0	0
Fair value of plan assets at end of year	2,303	2,125
Funded status	(229)	(593)
Pension benefit plans | Non-U.S. Pension Benefits
Change in pension benefit obligation:
Benefit obligation at beginning of year	(2,161)	(1,446)
Service cost	(44)	(40)
Interest cost	(19)	(22)
Employee/retiree contributions	(7)	(6)
Benefits and other expenses paid	59	59
Acquisitions and other	0	(436)
Actuarial gain (loss)	112	(106)
Amendments, settlements and curtailments	18	4
Foreign exchange rate impact	(98)	168
Benefit obligation at end of year	(1,944)	(2,161)
Change in plan assets:
Fair value of plan assets at beginning of year	1,331	1,138
Actual return on plan assets	80	104
Employer contributions	50	51
Employee/retiree contributions	7	6
Amendments and settlements	(10)	(7)
Benefits and other expenses paid	(59)	(59)
Acquisitions and other	0	30
Foreign exchange rate impact	(39)	68
Fair value of plan assets at end of year	1,360	1,331
Funded status	(584)	(830)
Other postretirement benefits
Change in pension benefit obligation:
Benefit obligation at beginning of year	(148)	(139)
Service cost	0	0
Interest cost	(2)	(4)
Employee/retiree contributions	(2)	(2)
Benefits and other expenses paid	14	12
Acquisitions and other	0	0
Actuarial gain (loss)	3	(15)
Amendments, settlements and curtailments	0	0
Foreign exchange rate impact	0	0
Benefit obligation at end of year	(135)	(148)
Change in plan assets:
Fair value of plan assets at beginning of year	0	0
Actual return on plan assets	0	0
Employer contributions	12	11
Employee/retiree contributions	2	1
Amendments and settlements	0	0
Benefits and other expenses paid	(14)	(12)
Acquisitions and other	0	0
Foreign exchange rate impact	0	0
Fair value of plan assets at end of year	0	0
Funded status	$ (135)	$ (148)