XML 126 R112.htm IDEA: XBRL DOCUMENT v3.22.0.1
Employee benefit plans - Schedule of Weighted-Average Assumptions Used to Determine Benefit Obligations and Related Expenses (Details) - Pension Benefits
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Defined Benefit Plan Disclosure      
Discount rate, Obligation 2.59% 2.25% 3.25%
Discount rate, Expense 2.25% 3.25% 4.00%
Expected long-term return on plan assets 7.50% 7.50% 7.50%