Postretirement Benefit Plans (Discount Rates) (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net Periodic Benefit Cost Assumptions
Expected long-term rate of return on plan assets	3.24%	3.46%	7.09%
United States
Benefit Obligation Assumptions
Discount rate	3.00%	2.50%	3.25%
Net Periodic Benefit Cost Assumptions
Discount rate	2.50%	3.25%	4.50%
Expected long-term rate of return on plan assets	6.50%	6.50%	7.75%
International
Benefit Obligation Assumptions
Discount rate	1.55%	1.06%	1.80%
Rate of future compensation increase	2.84%	2.79%	2.94%
Net Periodic Benefit Cost Assumptions
Discount rate	1.06%	1.80%	2.60%
Expected long-term rate of return on plan assets	2.60%	2.82%	6.96%
Rate of future compensation increase	2.79%	2.94%	2.92%