Employee Benefit Plans and Other Postretirement Benefits - Schedule Of Expected Benefit Payments For Next Five Years And Thereafter (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Pension Plan Assets
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
Expected benefit payments in 2020	$ 97,227
Expected benefit payments in 2021	98,376
Expected benefit payments in 2022	101,566
Expected benefit payments in 2023	104,864
Expected benefit payments in 2024	108,436
Expected benefit payments 2025-2028	590,687
SERPA Benefits
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
Expected benefit payments in 2020	2,666
Expected benefit payments in 2021	3,000
Expected benefit payments in 2022	3,309
Expected benefit payments in 2023	4,176
Expected benefit payments in 2024	4,401
Expected benefit payments 2025-2028	29,048
Postretirement Health Coverage
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
Expected benefit payments in 2020	23,328
Expected benefit payments in 2021	23,501
Expected benefit payments in 2022	23,625
Expected benefit payments in 2023	23,307
Expected benefit payments in 2024	22,902
Expected benefit payments 2025-2028	$ 109,195

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- Definition

Amount of benefits for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following latest fiscal year.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

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Amount of benefits for defined benefit plan expected to be paid in next fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in fifth fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in fourth fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in third fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in second fiscal year following latest fiscal year.

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