Pension and Other Postretirement Benefits - Benefits Expected to be Paid in Subsequent Years from Our Pension and Other Postretirement as Well as Medicare Subsidy Receipts (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Pension Benefits
Pension And Other Employee Benefit Plans [Line Items]
2020	$ 22,952
2021	22,159
2022	22,595
2023	24,115
2024	22,397
2025-2029	109,442
Total	223,660
Other Benefits
Pension And Other Employee Benefit Plans [Line Items]
2020	1,431
2021	1,442
2022	1,450
2023	1,453
2024	1,461
2025-2029	7,447
Total	$ 14,684

Defined Benefit Plan Expected Future Benefit Payments In Next Ten Years

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- Definition

Pension And Other Employee Benefit Plans [Line Items]

+ References

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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=108410482&loc=d3e1928-114920

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- Definition

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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