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	$ 168,618	$ 219,436	$ 189,880	$ 259,950
OTHER COMPREHENSIVE INCOME, NET OF TAX
Derivative instruments net unrealized gain, net of tax expense of $(331), $(286), $(413), and $(372)	1,007	870	1,259	1,132
Pension and other postretirement benefit activity, net of tax benefit (expense) of $693, $(21), $398 and $(357)	(2,113)	64	(1,212)	1,086
Total other comprehensive income (loss)	(1,106)	934	47	2,218
COMPREHENSIVE INCOME	167,512	220,370	189,927	262,168
Less: Comprehensive income attributable to noncontrolling interests	4,306	3,739	8,612	8,612
COMPREHENSIVE INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	$ 163,206	$ 216,631	$ 181,315	$ 253,556