Income Taxes (Reconciliation Of Provision For Income Taxes) (Details)	3 Months Ended	4 Months Ended	5 Months Ended	9 Months Ended
	Sep. 30, 2022	Apr. 30, 2021	Sep. 30, 2021	Sep. 30, 2022
Successor [Member]
Consolidated tax provision at federal statutory rate	21.00%		21.00%	21.00%
State income tax expense, net of federal income tax benefit	14.70%		2.80%	13.10%
Changes in certain deferred tax balances	2.10%			1.50%
Sec. 162(m) - nondeductible Executive Compensation	1.50%			2.50%
All other, net	(0.80%)		0.90%	(0.30%)
Effective tax rate	38.50%		24.70%	37.80%
Predecessor [Member]
Consolidated tax provision at federal statutory rate		21.00%
State income tax expense, net of federal income tax benefit		0.50%
Restructuring cost		0.30%
Fresh start and reorganization adjustments		(24.90%)
Effective tax rate		(3.10%)