Retirement Plans and Post Retirement Benefits Defined Benefit Plans (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2018	Dec. 31, 2016
Retirement Benefits [Abstract]
Maximum benefit amortization period	20 years
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Curtailment	$ 3.1	$ 0.1
Approximate percentage of assets represented by most significant plans	81.00%
Approximate percentage of benefit obligations represented by most significant plans	83.00%
Rate of eligible compensation increase	4.00%

Defined Benefit Plan, Maximum Amortization Period

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- Definition

Defined Benefit Plan, Significant Plans, Approximate Percentage of Beneift Obligation Accounted for

+ References

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- Definition

Defined Benefit Plan, Significant Plans, Approximate Percentage of Plan Assets Accounted for

+ References

No definition available.

+ Details

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- Definition

Defined Benefit Plan, Significant Plans, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase

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- Definition

Amount of gain (loss) recognized in net periodic benefit (cost) credit from event reducing expected years of future service of present employees or eliminating accrual of defined benefits for some or all future services of present employees.

+ 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 (h)(7)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

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