Employee and Retiree Benefit Plans - Projected Benefit Obligations, Accumulated Benefit Obligations and Fair Value of Plan Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Funded plan \| Qualified plan
Defined Benefit Plan Disclosure [Line Items]
Projected Benefit Obligations	$ 511,375	$ 734,375
Accumulated Benefit Obligations	499,338	723,887
Fair Value of Plan Assets	434,283	589,529
Unfunded plan \| Other postretirement plans
Defined Benefit Plan Disclosure [Line Items]
Projected Benefit Obligations	67,679	96,133
Accumulated Benefit Obligations	67,679	96,133
Fair Value of Plan Assets	0	0
Unfunded plan \| Nonqualified plan
Defined Benefit Plan Disclosure [Line Items]
Projected Benefit Obligations	141,917	188,713
Accumulated Benefit Obligations	139,634	188,530
Fair Value of Plan Assets	$ 0	$ 0

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Amount of accumulated benefit obligation for defined benefit plan with accumulated benefit obligation in excess of plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
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Amount of plan asset for defined benefit plan with accumulated benefit obligation in excess of plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
-Section 50
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Amount of projected benefit obligation for defined benefit pension plan with accumulated benefit obligation in excess of plan assets.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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