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Pension And Other Post-Retirement Benefits (Narrative) (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position	$ (90.0)	$ (96.0)
Other Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Contribution to pension plans for continuing operations		$ 0.3
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Expected required contributions	6.0
Contribution to pension plans for continuing operations	4.4
Accrued Expenses [Member]
Defined Benefit Plan Disclosure [Line Items]
Liability, Defined Benefit Plan, Current	$ 1.0

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- Definition

Defined benefit plan estimated required future employer contributions in current fiscal year.

+ References

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- Definition

Amount of asset (liability), recognized in statement of financial position, for defined benefit pension and other postretirement plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64852052&loc=d3e1703-114919

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Amount of contribution received by defined benefit plan from employer which increases plan assets.

+ References

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Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans, classified as current.

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-SubTopic 20
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-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64852052&loc=d3e1731-114919

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