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Pension and Postretirement Benefits - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2017 USD ($)
Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Amount expected to contribute in funded pension plans	$ 1.4
Amount expected to contribute in unfunded pension plans	0.9
Pension Plans | Funded Plans
Defined Benefit Plan Disclosure [Line Items]
Pension Contributions	0.3
Pension Plans | Unfunded Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Pension Contributions	0.2
US Postretirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Amount expected to contribute in postretirement benefit plans	1.1
Pension and Other Postretirement Benefit Contributions	$ 0.3

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of employer's best estimate of contributions expected to be paid to the plan in the current remaining fiscal period.

+ References

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- Definition

The amount of cash or cash equivalents contributed during the reporting period by the entity to fund its pension plans and its non-pension postretirement benefit plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3536-108585

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- Definition

The amount of cash or cash equivalents contributed by the entity to fund its pension plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3536-108585

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- Definition

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

+ References

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- Definition

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

+ References

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