Retirement and Employee Benefit Plans (Schedule of Assumptions Used - Net Periodic Benefit Cost) (Details)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Rate of compensation increase (2)			3.50%
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Discount rate		5.60%	3.20%
Expected return on plan assets		0.10%	0.10%
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.50%	3.10%	2.80%