Pension and Other Postretirement Benefit Plans - Schedule of Changes in Accumulated Postemployment Benefit Obligations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Change in plan assets:
Fair value of plan assets at beginning of period	$ 733,966
Fair value of plan assets at end of period	540,225	$ 733,966
Funded status:
Noncurrent assets	38,548	38,947
Pension Benefits
Change in benefit obligation:
Benefit obligation at beginning of period	723,006	778,868
Service cost	1,207	1,114	$ 1,183
Interest cost	16,539	14,230	20,176
Actuarial gain	(173,233)	(25,073)
Plan settlement	0	(719)
Benefits and other payments	(43,307)	(45,414)
Benefit obligation at end of period	524,212	723,006	778,868
Change in plan assets:
Fair value of plan assets at beginning of period	733,966	740,978
Actual return on plan assets	(151,968)	36,867
Company contributions	1,534	2,254
Benefits and other payments	(43,307)	(45,414)
Plan settlement	0	(719)
Fair value of plan assets at end of period	540,225	733,966	740,978
Funded status:
Noncurrent assets	38,548	38,947
Current liabilities	(1,950)	(1,974)
Noncurrent liabilities	(20,585)	(26,013)
Net asset (obligation) recognized	16,013	10,960
Amounts recognized in accumulated other comprehensive loss consist of:
Net actuarial loss (gain)	244,700	231,726
Prior service credit	0	0
Net amount recognized (before tax effect)	244,700	231,726
Other Postretirement Benefits
Change in benefit obligation:
Benefit obligation at beginning of period	353,297	413,710
Service cost	0	0	0
Interest cost	7,898	7,274	12,795
Actuarial gain	(84,810)	(42,836)
Plan settlement	0	0
Benefits and other payments	(21,356)	(24,851)
Benefit obligation at end of period	255,029	353,297	413,710
Change in plan assets:
Fair value of plan assets at beginning of period	0	0
Actual return on plan assets	0	0
Company contributions	21,356	24,851
Benefits and other payments	(21,356)	(24,851)
Plan settlement	0	0
Fair value of plan assets at end of period	0	0	$ 0
Funded status:
Noncurrent assets	0	0
Current liabilities	(22,436)	(23,638)
Noncurrent liabilities	(232,593)	(329,659)
Net asset (obligation) recognized	(255,029)	(353,297)
Amounts recognized in accumulated other comprehensive loss consist of:
Net actuarial loss (gain)	(5,473)	82,851
Prior service credit	(13,734)	(16,138)
Net amount recognized (before tax effect)	$ (19,207)	$ 66,713