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Retirement Plans and Post Retirement Benefits Asset Allocation and Fair Value of Plan Assets (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets |  | $ 239.9 |  | $ 237.4 |  | $ 268.0
Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets |  | 151.2 |  | 153.7 |  |
Fair Value, Inputs, Level 2 |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets |  | 76.5 |  | 70.4 |  |
Significant Unobservable Inputs (Level 3) |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets |  | 12.2 |  | 13.3 |  |
Multi-strategy Funds |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1] | 75.1 |  | 84.2 |  |
Multi-strategy Funds | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1] | 62.9 |  | 70.9 |  |
Multi-strategy Funds | Fair Value, Inputs, Level 2 |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1] | 0.0 |  | 0.0 |  |
Multi-strategy Funds | Significant Unobservable Inputs (Level 3) |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets |  | 12.2 | [1] | 13.3 | [1] | $ 26.1
Cash and Cash Equivalents |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets |  | 2.2 |  | 1.9 |  |
Cash and Cash Equivalents | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets |  | 0.0 |  | 0.0 |  |
Cash and Cash Equivalents | Fair Value, Inputs, Level 2 |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets |  | 2.2 |  | 1.9 |  |
Cash and Cash Equivalents | Significant Unobservable Inputs (Level 3) |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets |  | 0.0 |  | 0.0 |  |
Domestic stock funds |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [2] | 51.3 |  | 50.7 |  |
Domestic stock funds | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [2] | 38.0 |  | 39.0 |  |
Domestic stock funds | Fair Value, Inputs, Level 2 |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [2] | 13.3 |  | 11.7 |  |
Domestic stock funds | Significant Unobservable Inputs (Level 3) |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [2] | 0.0 |  | 0.0 |  |
International stock funds |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [2] | 38.5 |  | 34.0 |  |
International stock funds | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [2] | 13.5 |  | 11.7 |  |
International stock funds | Fair Value, Inputs, Level 2 |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [2] | 25.0 |  | 22.3 |  |
International stock funds | Significant Unobservable Inputs (Level 3) |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [2] | 0.0 |  | 0.0 |  |
Domestic bond funds |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets |  | 36.8 | [3] | 32.1 | [2] |
Domestic bond funds | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [2] | 36.8 |  | 32.1 |  |
Domestic bond funds | Fair Value, Inputs, Level 2 |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [2] | 0.0 |  | 0.0 |  |
Domestic bond funds | Significant Unobservable Inputs (Level 3) |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [2] | 0.0 |  | 0.0 |  |
International bond funds |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [3] | 36.0 |  | 34.5 |  |
International bond funds | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [2] | 0.0 |  | 0.0 |  |
International bond funds | Fair Value, Inputs, Level 2 |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [2] | 36.0 |  | 34.5 |  |
International bond funds | Significant Unobservable Inputs (Level 3) |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [2] | $ 0.0 |  | $ 0.0 |  |
United States Pension Plan of US Entity [Member] |  |  |  |  |  |
Target Allocations [Abstract] |  |  |  |  |  |
Target Plan Asset Allocation 2016 |  | 100.00% |  |  |  |
Defined Benefit Plan, Actual Plan Asset Allocation |  | 100.00% |  | 100.00% |  |
United States Pension Plan of US Entity [Member] | Equity Securities |  |  |  |  |  |
Target Allocations [Abstract] |  |  |  |  |  |
Target Plan Asset Allocation 2016 |  | 40.00% |  |  |  |
Defined Benefit Plan, Actual Plan Asset Allocation |  | 40.00% |  | 38.00% |  |
United States Pension Plan of US Entity [Member] | Debt Securities |  |  |  |  |  |
Target Allocations [Abstract] |  |  |  |  |  |
Target Plan Asset Allocation 2016 |  | 20.00% |  |  |  |
Defined Benefit Plan, Actual Plan Asset Allocation |  | 20.00% |  | 17.00% |  |
United States Pension Plan of US Entity [Member] | Multi-strategy Funds |  |  |  |  |  |
Target Allocations [Abstract] |  |  |  |  |  |
Target Plan Asset Allocation 2016 |  | 40.00% |  |  |  |
Defined Benefit Plan, Actual Plan Asset Allocation |  | 40.00% |  | 45.00% |  |
United States Pension Plan of US Entity [Member] | Cash and Cash Equivalents |  |  |  |  |  |
Target Allocations [Abstract] |  |  |  |  |  |
Target Plan Asset Allocation 2016 |  | 0.00% |  |  |  |
Defined Benefit Plan, Actual Plan Asset Allocation |  | 0.00% |  | 0.00% |  |
Non-US Benefit Plans [Member] [Member] |  |  |  |  |  |
Target Allocations [Abstract] |  |  |  |  |  |
Target Plan Asset Allocation 2016 |  | 100.00% |  |  |  |
Defined Benefit Plan, Actual Plan Asset Allocation |  | 100.00% |  | 100.00% |  |
Non-US Benefit Plans [Member] [Member] | Equity Securities |  |  |  |  |  |
Target Allocations [Abstract] |  |  |  |  |  |
Target Plan Asset Allocation 2016 |  | 27.00% |  |  |  |
Defined Benefit Plan, Actual Plan Asset Allocation |  | 29.00% |  | 28.00% |  |
Non-US Benefit Plans [Member] [Member] | Debt Securities |  |  |  |  |  |
Target Allocations [Abstract] |  |  |  |  |  |
Target Plan Asset Allocation 2016 |  | 71.00% |  |  |  |
Defined Benefit Plan, Actual Plan Asset Allocation |  | 70.00% |  | 71.00% |  |
Non-US Benefit Plans [Member] [Member] | Cash and Cash Equivalents |  |  |  |  |  |
Target Allocations [Abstract] |  |  |  |  |  |
Target Plan Asset Allocation 2016 |  | 2.00% |  |  |  |
Defined Benefit Plan, Actual Plan Asset Allocation |  | 1.00% |  | 1.00% |  |
[1] | The multi-strategy funds invest in various hedge funds that employ a fund of funds strategy.
[2] | Equity investments include investments in funds that are primarily invested in large capitalization U.S. and international equity securities and a mutual fund.
[3] | Fixed income investments include investments in funds that are primarily invested in a diversified portfolio of investment grade U.S. and international debt securities.

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