Employee Retirement Benefits (Weighted-Average Assumptions Used) (Details)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Pension Plan
Weighted average assumptions used to determine benefit obligations
Benefit obligation discount rate	5.04%	5.34%
Benefit obligation rate of compensation increase	4.00%	4.50%
Summary of the weighted average assumtions used to determine net periodic benefit cost
Discount rate	5.34%	2.97%	2.68%
Expected return on plan assets	7.00%	7.00%	7.00%
Rate of compensation increase	4.50%
Pension Plan | Minimum [Member]
Summary of the weighted average assumtions used to determine net periodic benefit cost
Rate of compensation increase		2.25%	2.25%
Pension Plan | Maximum
Summary of the weighted average assumtions used to determine net periodic benefit cost
Rate of compensation increase		3.25%	3.25%
Supplemental Employee Retirement Plan
Weighted average assumptions used to determine benefit obligations
Benefit obligation discount rate	5.11%	5.42%
Benefit obligation rate of compensation increase	4.00%	4.50%
Summary of the weighted average assumtions used to determine net periodic benefit cost
Discount rate	5.42%	2.90%	2.52%
Rate of compensation increase	4.50%
Supplemental Employee Retirement Plan | Minimum [Member]
Summary of the weighted average assumtions used to determine net periodic benefit cost
Rate of compensation increase		2.25%	2.25%
Supplemental Employee Retirement Plan | Maximum
Summary of the weighted average assumtions used to determine net periodic benefit cost
Rate of compensation increase		3.25%	3.25%