Employee Benefits Allocation of Plan Assets (Details)	Dec. 31, 2022	Dec. 31, 2021
Allocation of Plan Assets
Defined benefit plan, plan assets, target allocation, percentage	100.00%
Defined benefit plan, actual plan asset allocations	100.00%	100.00%
Alternative Investments
Allocation of Plan Assets
Defined benefit plan, plan assets, target allocation, percentage	18.00%
Defined benefit plan, actual plan asset allocations	18.00%	28.00%
Equity securities
Allocation of Plan Assets
Defined benefit plan, plan assets, target allocation, percentage	14.00%
Defined benefit plan, actual plan asset allocations	14.00%	22.00%
Fixed income securities
Allocation of Plan Assets
Defined benefit plan, plan assets, target allocation, percentage	26.00%
Defined benefit plan, actual plan asset allocations	26.00%	14.00%
Liability driven investments
Allocation of Plan Assets
Defined benefit plan, plan assets, target allocation, percentage	29.00%
Defined benefit plan, actual plan asset allocations	28.00%	21.00%
Real estate
Allocation of Plan Assets
Defined benefit plan, plan assets, target allocation, percentage	11.00%
Defined benefit plan, actual plan asset allocations	11.00%	8.00%
Other plan assets
Allocation of Plan Assets
Defined benefit plan, plan assets, target allocation, percentage	2.00%
Defined benefit plan, actual plan asset allocations	3.00%	7.00%