Pension and Postretirement Plans (Total Benefit/Cost) (Details 1) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 5,557	$ 5,775	$ 16,581	$ 17,254
Net Periodic Cost (Benefit)			(136,411)	(68,644)
Defined Benefit Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	5,557	5,775	16,581	17,254
Interest cost	7,612	6,754	22,893	20,162
Expected return on assets	(41,779)	(34,800)	(125,705)	(103,078)
Amortization of prior service cost (credit)	708	711	2,126	2,134
Recognized actuarial loss (gain)	(17,538)	(1,671)	(52,306)	(6,234)
Net Periodic Cost (Benefit)	(45,440)	(23,231)	(136,411)	(69,762)
Special separation benefit expense	0	0	0	1,118
Net Periodic Cost (Benefit)	(45,440)	(23,231)	(136,411)	(68,644)
Supplemental Executive Retirement Plan (SERP) [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	227	256	683	767
Interest cost	823	736	2,467	2,207
Amortization of prior service cost (credit)	9	83	27	248
Recognized actuarial loss (gain)	166	1,482	499	4,447
Net Periodic Cost (Benefit)	1,225	2,557	3,676	7,669
Other Postretirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	24	23	73	69
Amortization of prior service cost (credit)	(1)	(1)	(5)	(5)
Recognized actuarial loss (gain)	(711)	(877)	(2,132)	(2,632)
Net Periodic Cost (Benefit)	$ (688)	$ (855)	$ (2,064)	$ (2,568)