CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Statement of Comprehensive Income [Abstract]
Net Income	$ 351,289	$ 285,046	$ 1,090,356	$ 919,468
Other Comprehensive Income, Net of Tax:
Qualified Cash Flow Hedging Instruments	5	115	15	967
Changes in Unrealized Losses on Marketable Securities	(667)	(106)	(1,990)	(569)
Changes in Funded Status of Pension, SERP and PBOP Benefit Plans	2,520	2,468	3,244	4,148
Net OCI	1,858	2,477	1,269	4,546
Comprehensive Income Attributable to Noncontrolling Interests	(1,880)	(1,880)	(5,639)	(5,639)
Comprehensive Income Attributable to Common Shareholders	$ 351,267	$ 285,643	$ 1,085,986	$ 918,375