CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net Income	$ 341,543	$ 351,289	$ 851,884	$ 1,090,356
Other Comprehensive Income, Net of Tax:
Qualified Cash Flow Hedging Instruments	5	5	15	15
Changes in Unrealized (Losses)/Gains on Marketable Securities	0	(667)	1,254	(1,990)
Changes in Funded Status of Pension, SERP and PBOP Benefit Plans	8,076	2,520	14,130	3,244
Other Comprehensive Income, Net of Tax	8,081	1,858	15,399	1,269
Comprehensive Income Attributable to Noncontrolling Interests	(1,880)	(1,880)	(5,639)	(5,639)
Comprehensive Income Attributable to Common Shareholders	$ 347,744	$ 351,267	$ 861,644	$ 1,085,986