Employee Benefit Plans (Narrative-Health Care Trends) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Pension settlement expense	$ (102)	$ (43)	$ (62)
Percent Amortized Of Unamortized Balance For Net Actuarial Gain And Losses	10.00%
Defined Benefit Plans	$ (394)	75	(51)
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension settlement expense	$ 0	$ 0	0
Discount Rate	2.65%	2.15%
U.S. [Member] | Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension settlement expense	$ (102)	$ (44)	(62)
Discount Rate	2.80%	2.30%
U.S. [Member] | Other Postretirement Benefit Plans, Defined Benefit [Member] | COP Pre Sixty Five Retiree [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Yea	6.50%
Defined Benefit Plan Ultimate Health Care Cost Trend Rate 1	5.00%
U.S. [Member] | Other Postretirement Benefit Plans, Defined Benefit [Member] | Post Sixty Five Retiree [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Yea	4.25%
Defined Benefit Plan Ultimate Health Care Cost Trend Rate 1	5.00%
Foreign Pension Plans, Defined Benefit [Member] | Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension settlement expense	$ 0	$ 1	$ 0
Discount Rate	2.15%	1.80%