XML 247 R214.htm IDEA: XBRL DOCUMENT v3.24.0.1
Employee benefits - Accumulated benefit obligation less than plan assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Pension Plans    
Defined Benefit Plan Disclosure    
Project benefit obligation $ 599,829 $ 0
Accumulated benefit obligation 599,829 0
Fair value of plan assets 623,233 0
OPEB Plan    
Defined Benefit Plan Disclosure    
Project benefit obligation 0 0
Accumulated benefit obligation 0 0
Fair value of plan assets $ 0 $ 0