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Employee and Retiree Benefit Plans (Benefit Payments, Reflected Expected Future Service as Appropriate which are Expected to be Paid in Future Years from Assets of Plans or by Company) (Details) $ in Thousands | Dec. 31, 2017 USD ($)
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Pension Benefits [Member] |
Defined Benefit Plan Disclosure [Line Items] |
2018 | $ 39,929
2019 | 40,236
2020 | 41,220
2021 | 42,276
2022 | 43,554
2023-2027 | 227,039
Other Postretirement Benefits [Member] |
Defined Benefit Plan Disclosure [Line Items] |
2018 | 6,259
2019 | 6,280
2020 | 6,357
2021 | 6,489
2022 | 6,560
2023-2027 | $ 33,971

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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of benefits for defined benefit plan expected to be paid in next fiscal year following latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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