Employee Benefit Plans - Actuarial assumptions (Details) - Foreign Plan	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Minimum
Defined Benefit Plan Disclosure [Line Items]
Discount rates	1.40%	2.15%
Inflation	1.25%	1.25%
Expected return on plan assets	2.00%	2.00%
Rate of salary increases	2.25%	2.25%
Maximum
Defined Benefit Plan Disclosure [Line Items]
Discount rates	4.10%	3.50%
Inflation	2.20%	2.20%
Expected return on plan assets	2.50%	2.50%
Rate of salary increases	3.20%	3.20%