CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS)/INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Net (Loss)/Income	$ (116,177)	$ 341,543	$ 744,772	$ 851,884
Other Comprehensive Income, Net of Tax:
Qualified Cash Flow Hedging Instruments	5	5	15	15
Changes in Unrealized Gains on Marketable Securities	0	0	0	1,254
Changes in Funded Status of Pension, SERP and PBOP Benefit Plans	1,371	8,076	5,517	14,130
Other Comprehensive Income, Net of Tax	1,376	8,081	5,532	15,399
Comprehensive Income Attributable to Noncontrolling Interests	(1,880)	(1,880)	(5,639)	(5,639)
Comprehensive (Loss)/Income Attributable to Common Shareholders	$ (116,681)	$ 347,744	$ 744,665	$ 861,644