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Pension Benefits and Other Postretirement Benefit Plans (Additional Information) (Details) $ in Millions | 6 Months Ended
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Jun. 30, 2019 USD ($) plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
Number of qualified noncontributory defined benefit plans | plan | 2
Merged Plan |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
Pension plan, accumulated other comprehensive loss, before tax | $ | $ 47

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- Definition Number of Qualified Noncontributory Defined Benefit Plans + References No definition available. + Details
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- Definition Amount, before tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (i-k) -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669646-108580 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669686-108580 + Details
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- Details
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