Schedule I - Condensed Financial Information Of Registrant (Unconsolidated Balance Sheet) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	$ 28,579	$ 201,548
Total current assets	574,030	706,829
Derivative Asset, Noncurrent	0	12,172
Total other non-current assets	1,120,591	849,054
TOTAL ASSETS	6,181,523	5,589,214	$ 5,239,767
Short-term debt	899,159	0
Accounts payable	292,851	189,845
Accumulated deficit	25,182	(108)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	1,129,722	1,090,518
Total common shareholder's deficit	1,076,468	1,090,518	794,600	$ 520,988
Long-term debt	2,558,420	3,000,450
Deferred Income Taxes and Other Tax Liabilities, Noncurrent	18,931	7,329
Accrued interest	33,639	33,447
Total current liabilities	1,328,455	323,225
Total non-current liabilities	3,723,346	4,175,471
Liabilities	5,051,801	4,498,696
Additional Paid in Capital	1,021,992	1,068,357
Accumulated Other Comprehensive Income (Loss), Net of Tax	29,294	22,269	(29,407)	(43,420)
TOTAL LIABILITIES AND EQUITY	6,181,523	5,589,214
Restricted Cash and Cash Equivalents	5	5
Income Taxes Receivable, Current	36,481	18,000
Other Assets, Current	26,358	19,882
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	537	191
Total current assets	53,798	19,018
Investment in subsidiaries	1,921,548	1,945,556
Other Assets	3,540	3,211
Total other non-current assets	1,925,088	1,960,939
TOTAL ASSETS	1,978,886	1,979,957
Short-term debt	404,474	0
Accounts payable	0	87
Accumulated deficit	25,182	(108)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	1,076,468	1,090,518	794,600	520,988
Long-term debt	470,127	873,663
Accrued interest	8,360	8,360
Total current liabilities	412,834	8,447
Total non-current liabilities	489,584	880,992
Liabilities	902,418	889,439
Additional Paid in Capital	1,021,992	1,068,357
Accumulated Other Comprehensive Income (Loss), Net of Tax	29,294	22,269	$ (29,407)	$ (43,420)
TOTAL LIABILITIES AND EQUITY	1,978,886	1,979,957
Income Taxes Receivable, Current	14,294	0
Other Assets, Current	$ 7,626	$ 7,509