Retirement and Employee Benefit Plans (Schedule of Assumptions Used - Net Periodic Benefit Cost) (Details)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Rate of compensation increase (1)		3.50%	3.50%
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.60%	3.20%	3.70%
Expected return on plan assets	0.10%	0.10%	6.50%
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Discount rate	3.10%	2.80%	3.50%