CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Net Income	$ 293,742	$ 266,400	$ 739,068	$ 634,422
Other Comprehensive Income (Loss), Net of Tax:
Qualified Cash Flow Hedging Instruments	5	445	10	852
Changes in Unrealized (Losses)/Gains on Marketable Securities	(505)	273	(1,323)	(463)
Changes in Funded Status of Pension, SERP and PBOP Benefit Plans	(793)	163	724	1,680
Net OCI	(1,293)	881	(589)	2,069
Comprehensive Income Attributable to Noncontrolling Interests	(1,880)	(1,880)	(3,759)	(3,759)
Comprehensive Income Attributable to Common Shareholders	$ 290,569	$ 265,401	$ 734,720	$ 632,732