Employee Benefits - Summary of Asset Class Allocation per Pension Plan Investment Policy and Weighted Average Asset Allocation (Details)	Dec. 31, 2021
Equities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, weighted average asset allocation, percentage	66.00%
Equities | Minimum
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, policy range, percentage	54.00%
Equities | Maximum
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, policy range, percentage	60.00%
Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, weighted average asset allocation, percentage	28.00%
Fixed Income | Minimum
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, policy range, percentage	35.00%
Fixed Income | Maximum
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, policy range, percentage	40.00%
Other Investments
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, weighted average asset allocation, percentage	6.00%
Other Investments | Minimum
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, policy range, percentage	5.00%
Other Investments | Maximum
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, policy range, percentage	6.00%