Post Employment Plans - Weighted Average Assumptions (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Pension plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate	1.18%	0.95%	1.06%
Decrease in the discount rate attributable to the reduction in bond yields across the Euro zone	23.00%
Inflation	2.10%	1.33%	1.18%
Expected return on assets	1.55%	1.76%	2.54%
Interest crediting rates	0.34%	0.59%	0.83%
Other Postretirement Benefits Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate	2.14%	3.14%	4.25%