Employee Benefit Plans and Other Postretirement Benefits - Schedule of Fair Value of Pension Plan and Postretirement Healthcare Plan Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pension Benefits
Defined Benefit Plan Disclosure
Total benefit plan assets	$ 1,839,779	$ 1,901,824
Pension Benefits | Fair Value, Inputs, Level 1 and 2
Defined Benefit Plan Disclosure
Total benefit plan assets	1,838,890	1,899,438
Pension Benefits | Level 1
Defined Benefit Plan Disclosure
Total benefit plan assets	471,860	660,859
Pension Benefits | Level 2
Defined Benefit Plan Disclosure
Total benefit plan assets	1,367,030	1,238,579
Pension Benefits | Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan Disclosure
Total benefit plan assets	889	2,386
Pension Benefits | Cash and cash equivalents | Fair Value, Inputs, Level 1 and 2
Defined Benefit Plan Disclosure
Total benefit plan assets	26,111	27,730
Pension Benefits | Cash and cash equivalents | Level 1
Defined Benefit Plan Disclosure
Total benefit plan assets	26,111	0
Pension Benefits | Cash and cash equivalents | Level 2
Defined Benefit Plan Disclosure
Total benefit plan assets	0	27,730
Pension Benefits | Equity Holdings | Fair Value, Inputs, Level 1 and 2
Defined Benefit Plan Disclosure
Total benefit plan assets	427,618	494,194
Pension Benefits | Equity Holdings | Level 1
Defined Benefit Plan Disclosure
Total benefit plan assets	325,721	494,143
Pension Benefits | Equity Holdings | Level 2
Defined Benefit Plan Disclosure
Total benefit plan assets	101,897	51
Pension Benefits | U.S. companies | Fair Value, Inputs, Level 1 and 2
Defined Benefit Plan Disclosure
Total benefit plan assets	190,113	346,895
Pension Benefits | U.S. companies | Level 1
Defined Benefit Plan Disclosure
Total benefit plan assets	190,058	346,844
Pension Benefits | U.S. companies | Level 2
Defined Benefit Plan Disclosure
Total benefit plan assets	55	51
Pension Benefits | Foreign companies | Fair Value, Inputs, Level 1 and 2
Defined Benefit Plan Disclosure
Total benefit plan assets	32	22,425
Pension Benefits | Foreign companies | Level 1
Defined Benefit Plan Disclosure
Total benefit plan assets	32	22,425
Pension Benefits | Foreign companies | Level 2
Defined Benefit Plan Disclosure
Total benefit plan assets	0	0
Pension Benefits | Pooled equity funds | Fair Value, Inputs, Level 1 and 2
Defined Benefit Plan Disclosure
Total benefit plan assets	237,473	124,853
Pension Benefits | Pooled equity funds | Level 1
Defined Benefit Plan Disclosure
Total benefit plan assets	135,631	124,853
Pension Benefits | Pooled equity funds | Level 2
Defined Benefit Plan Disclosure
Total benefit plan assets	101,842	0
Pension Benefits | Other | Fair Value, Inputs, Level 1 and 2
Defined Benefit Plan Disclosure
Total benefit plan assets		21
Pension Benefits | Other | Level 1
Defined Benefit Plan Disclosure
Total benefit plan assets		21
Pension Benefits | Other | Level 2
Defined Benefit Plan Disclosure
Total benefit plan assets		0
Pension Benefits | Fixed-income holdings | Fair Value, Inputs, Level 1 and 2
Defined Benefit Plan Disclosure
Total benefit plan assets	1,385,161	1,377,514
Pension Benefits | Fixed-income holdings | Level 1
Defined Benefit Plan Disclosure
Total benefit plan assets	120,028	166,716
Pension Benefits | Fixed-income holdings | Level 2
Defined Benefit Plan Disclosure
Total benefit plan assets	1,265,133	1,210,798
Pension Benefits | U.S. Treasuries | Fair Value, Inputs, Level 1 and 2
Defined Benefit Plan Disclosure
Total benefit plan assets	120,028	110,767
Pension Benefits | U.S. Treasuries | Level 1
Defined Benefit Plan Disclosure
Total benefit plan assets	120,028	110,767
Pension Benefits | U.S. Treasuries | Level 2
Defined Benefit Plan Disclosure
Total benefit plan assets	0	0
Pension Benefits | Federal agencies | Fair Value, Inputs, Level 1 and 2
Defined Benefit Plan Disclosure
Total benefit plan assets	11,271	11,028
Pension Benefits | Federal agencies | Level 1
Defined Benefit Plan Disclosure
Total benefit plan assets	0	0
Pension Benefits | Federal agencies | Level 2
Defined Benefit Plan Disclosure
Total benefit plan assets	11,271	11,028
Pension Benefits | Corporate bonds | Fair Value, Inputs, Level 1 and 2
Defined Benefit Plan Disclosure
Total benefit plan assets	694,002	708,790
Pension Benefits | Corporate bonds | Level 1
Defined Benefit Plan Disclosure
Total benefit plan assets	0	0
Pension Benefits | Corporate bonds | Level 2
Defined Benefit Plan Disclosure
Total benefit plan assets	694,002	708,790
Pension Benefits | Pooled fixed income funds | Fair Value, Inputs, Level 1 and 2
Defined Benefit Plan Disclosure
Total benefit plan assets	463,769	442,409
Pension Benefits | Pooled fixed income funds | Level 1
Defined Benefit Plan Disclosure
Total benefit plan assets	0	55,487
Pension Benefits | Pooled fixed income funds | Level 2
Defined Benefit Plan Disclosure
Total benefit plan assets	463,769	386,922
Pension Benefits | Foreign bonds | Fair Value, Inputs, Level 1 and 2
Defined Benefit Plan Disclosure
Total benefit plan assets	86,071	93,034
Pension Benefits | Foreign bonds | Level 1
Defined Benefit Plan Disclosure
Total benefit plan assets	0	462
Pension Benefits | Foreign bonds | Level 2
Defined Benefit Plan Disclosure
Total benefit plan assets	86,071	92,572
Pension Benefits | Municipal bonds | Fair Value, Inputs, Level 1 and 2
Defined Benefit Plan Disclosure
Total benefit plan assets	10,020	11,486
Pension Benefits | Municipal bonds | Level 1
Defined Benefit Plan Disclosure
Total benefit plan assets	0	0
Pension Benefits | Municipal bonds | Level 2
Defined Benefit Plan Disclosure
Total benefit plan assets	10,020	11,486
Pension Benefits | Private equity investments | Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan Disclosure
Total benefit plan assets	334	794
Pension Benefits | Real estate investments | Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan Disclosure
Total benefit plan assets	555	1,592
Postretirement Healthcare Benefits
Defined Benefit Plan Disclosure
Total benefit plan assets	244,490	225,167	$ 205,803
Postretirement Healthcare Benefits | Fair Value, Inputs, Level 1 and 2
Defined Benefit Plan Disclosure
Total benefit plan assets	229,615	210,450
Postretirement Healthcare Benefits | Level 1
Defined Benefit Plan Disclosure
Total benefit plan assets	173,257	204,138
Postretirement Healthcare Benefits | Level 2
Defined Benefit Plan Disclosure
Total benefit plan assets	56,358	6,312
Postretirement Healthcare Benefits | Cash and cash equivalents | Fair Value, Inputs, Level 1 and 2
Defined Benefit Plan Disclosure
Total benefit plan assets	1,824	2,391
Postretirement Healthcare Benefits | Cash and cash equivalents | Level 1
Defined Benefit Plan Disclosure
Total benefit plan assets	1,824	0
Postretirement Healthcare Benefits | Cash and cash equivalents | Level 2
Defined Benefit Plan Disclosure
Total benefit plan assets	0	2,391
Postretirement Healthcare Benefits | Equity Holdings | Fair Value, Inputs, Level 1 and 2
Defined Benefit Plan Disclosure
Total benefit plan assets	169,500	160,529
Postretirement Healthcare Benefits | Equity Holdings | Level 1
Defined Benefit Plan Disclosure
Total benefit plan assets	156,298	160,529
Postretirement Healthcare Benefits | Equity Holdings | Level 2
Defined Benefit Plan Disclosure
Total benefit plan assets	13,202	0
Postretirement Healthcare Benefits | U.S. companies | Fair Value, Inputs, Level 1 and 2
Defined Benefit Plan Disclosure
Total benefit plan assets	88,083	113,135
Postretirement Healthcare Benefits | U.S. companies | Level 1
Defined Benefit Plan Disclosure
Total benefit plan assets	88,083	113,135
Postretirement Healthcare Benefits | U.S. companies | Level 2
Defined Benefit Plan Disclosure
Total benefit plan assets	0	0
Postretirement Healthcare Benefits | Foreign companies | Fair Value, Inputs, Level 1 and 2
Defined Benefit Plan Disclosure
Total benefit plan assets	27,430	21,034
Postretirement Healthcare Benefits | Foreign companies | Level 1
Defined Benefit Plan Disclosure
Total benefit plan assets	27,430	21,034
Postretirement Healthcare Benefits | Foreign companies | Level 2
Defined Benefit Plan Disclosure
Total benefit plan assets	0	0
Postretirement Healthcare Benefits | Pooled equity funds | Fair Value, Inputs, Level 1 and 2
Defined Benefit Plan Disclosure
Total benefit plan assets	53,987	26,355
Postretirement Healthcare Benefits | Pooled equity funds | Level 1
Defined Benefit Plan Disclosure
Total benefit plan assets	40,785	26,355
Postretirement Healthcare Benefits | Pooled equity funds | Level 2
Defined Benefit Plan Disclosure
Total benefit plan assets	13,202	0
Postretirement Healthcare Benefits | Other | Fair Value, Inputs, Level 1 and 2
Defined Benefit Plan Disclosure
Total benefit plan assets		5
Postretirement Healthcare Benefits | Other | Level 1
Defined Benefit Plan Disclosure
Total benefit plan assets		5
Postretirement Healthcare Benefits | Other | Level 2
Defined Benefit Plan Disclosure
Total benefit plan assets		0
Postretirement Healthcare Benefits | Fixed-income holdings | Fair Value, Inputs, Level 1 and 2
Defined Benefit Plan Disclosure
Total benefit plan assets	58,291	47,530
Postretirement Healthcare Benefits | Fixed-income holdings | Level 1
Defined Benefit Plan Disclosure
Total benefit plan assets	15,135	43,609
Postretirement Healthcare Benefits | Fixed-income holdings | Level 2
Defined Benefit Plan Disclosure
Total benefit plan assets	43,156	3,921
Postretirement Healthcare Benefits | U.S. Treasuries | Fair Value, Inputs, Level 1 and 2
Defined Benefit Plan Disclosure
Total benefit plan assets	415	359
Postretirement Healthcare Benefits | U.S. Treasuries | Level 1
Defined Benefit Plan Disclosure
Total benefit plan assets	415	359
Postretirement Healthcare Benefits | U.S. Treasuries | Level 2
Defined Benefit Plan Disclosure
Total benefit plan assets	0	0
Postretirement Healthcare Benefits | Federal agencies | Fair Value, Inputs, Level 1 and 2
Defined Benefit Plan Disclosure
Total benefit plan assets	39	36
Postretirement Healthcare Benefits | Federal agencies | Level 1
Defined Benefit Plan Disclosure
Total benefit plan assets	0	0
Postretirement Healthcare Benefits | Federal agencies | Level 2
Defined Benefit Plan Disclosure
Total benefit plan assets	39	36
Postretirement Healthcare Benefits | Corporate bonds | Fair Value, Inputs, Level 1 and 2
Defined Benefit Plan Disclosure
Total benefit plan assets	2,388	2,286
Postretirement Healthcare Benefits | Corporate bonds | Level 1
Defined Benefit Plan Disclosure
Total benefit plan assets	0	0
Postretirement Healthcare Benefits | Corporate bonds | Level 2
Defined Benefit Plan Disclosure
Total benefit plan assets	2,388	2,286
Postretirement Healthcare Benefits | Pooled fixed income funds | Fair Value, Inputs, Level 1 and 2
Defined Benefit Plan Disclosure
Total benefit plan assets	55,119	44,512
Postretirement Healthcare Benefits | Pooled fixed income funds | Level 1
Defined Benefit Plan Disclosure
Total benefit plan assets	14,720	43,248
Postretirement Healthcare Benefits | Pooled fixed income funds | Level 2
Defined Benefit Plan Disclosure
Total benefit plan assets	40,399	1,264
Postretirement Healthcare Benefits | Foreign bonds | Fair Value, Inputs, Level 1 and 2
Defined Benefit Plan Disclosure
Total benefit plan assets	296	300
Postretirement Healthcare Benefits | Foreign bonds | Level 1
Defined Benefit Plan Disclosure
Total benefit plan assets	0	2
Postretirement Healthcare Benefits | Foreign bonds | Level 2
Defined Benefit Plan Disclosure
Total benefit plan assets	296	298
Postretirement Healthcare Benefits | Municipal bonds | Fair Value, Inputs, Level 1 and 2
Defined Benefit Plan Disclosure
Total benefit plan assets	34	37
Postretirement Healthcare Benefits | Municipal bonds | Level 1
Defined Benefit Plan Disclosure
Total benefit plan assets	0	0
Postretirement Healthcare Benefits | Municipal bonds | Level 2
Defined Benefit Plan Disclosure
Total benefit plan assets	34	37
Postretirement Healthcare Benefits | Limited partnership interests | Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan Disclosure
Total benefit plan assets	14,537	13,773
Postretirement Healthcare Benefits | Real estate investments | Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan Disclosure
Total benefit plan assets	$ 338	$ 944