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PENSION AND POST-RETIREMENT PLANS - FAIR VALUE (Details) - Pensions - USD ($) $ in Millions | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | --- | ---
Pension and Post-retirement Plans |  |  |
Total | $ 178.8 | $ 168.9 | $ 178.9
Significant Unobservable Inputs (Level 3) | Private equity partnership interests |  |  |
Pension and Post-retirement Plans |  |  |
Total | 0.1 | 0.2 | $ 0.3
Fair Value Measurement |  |  |
Pension and Post-retirement Plans |  |  |
Total | 178.8 | 168.9 |
Fair Value Measurement | Cash |  |  |
Pension and Post-retirement Plans |  |  |
Total | 7.8 | 6.9 |
Fair Value Measurement | U.S. large-cap |  |  |
Pension and Post-retirement Plans |  |  |
Total | 67.1 | 64.5 |
Fair Value Measurement | U.S. mid- and small-cap |  |  |
Pension and Post-retirement Plans |  |  |
Total | 38.9 | 34.7 |
Fair Value Measurement | International large-cap |  |  |
Pension and Post-retirement Plans |  |  |
Total | 16.9 | 16.5 |
Fair Value Measurement | International small-cap |  |  |
Pension and Post-retirement Plans |  |  |
Total | 6.9 | 6.1 |
Fair Value Measurement | U.S. Treasuries |  |  |
Pension and Post-retirement Plans |  |  |
Total | 8.9 | 5.6 |
Fair Value Measurement | Municipal bonds |  |  |
Pension and Post-retirement Plans |  |  |
Total | 9.3 | 5.3 |
Fair Value Measurement | Investment grade U.S. corporate bonds |  |  |
Pension and Post-retirement Plans |  |  |
Total | 5.3 | 2.4 |
Fair Value Measurement | High-yield U.S. corporate bonds |  |  |
Pension and Post-retirement Plans |  |  |
Total | 6.3 | 6.0 |
Fair Value Measurement | Emerging markets fixed income |  |  |
Pension and Post-retirement Plans |  |  |
Total | 0.5 | 10.4 |
Fair Value Measurement | Real estate partnerships interests |  |  |
Pension and Post-retirement Plans |  |  |
Total | 10.8 | 10.3 |
Fair Value Measurement | Private equity partnership interests |  |  |
Pension and Post-retirement Plans |  |  |
Total | 0.1 | 0.2 |
Fair Value Measurement | Quoted Prices in Active Markets (Level 1) |  |  |
Pension and Post-retirement Plans |  |  |
Total | 71.6 | 94.6 |
Fair Value Measurement | Quoted Prices in Active Markets (Level 1) | Cash |  |  |
Pension and Post-retirement Plans |  |  |
Total | 7.8 | 6.9 |
Fair Value Measurement | Quoted Prices in Active Markets (Level 1) | U.S. large-cap |  |  |
Pension and Post-retirement Plans |  |  |
Total | 31.6 | 48.6 |
Fair Value Measurement | Quoted Prices in Active Markets (Level 1) | U.S. mid- and small-cap |  |  |
Pension and Post-retirement Plans |  |  |
Total | 31.7 | 28.7 |
Fair Value Measurement | Quoted Prices in Active Markets (Level 1) | Emerging markets fixed income |  |  |
Pension and Post-retirement Plans |  |  |
Total | 0.5 | 10.4 |
Fair Value Measurement | Significant Observable Inputs (Level 2) |  |  |
Pension and Post-retirement Plans |  |  |
Total | 96.3 | 63.8 |
Fair Value Measurement | Significant Observable Inputs (Level 2) | U.S. large-cap |  |  |
Pension and Post-retirement Plans |  |  |
Total | 35.5 | 15.9 |
Fair Value Measurement | Significant Observable Inputs (Level 2) | U.S. mid- and small-cap |  |  |
Pension and Post-retirement Plans |  |  |
Total | 7.2 | 6.0 |
Fair Value Measurement | Significant Observable Inputs (Level 2) | International large-cap |  |  |
Pension and Post-retirement Plans |  |  |
Total | 16.9 | 16.5 |
Fair Value Measurement | Significant Observable Inputs (Level 2) | International small-cap |  |  |
Pension and Post-retirement Plans |  |  |
Total | 6.9 | 6.1 |
Fair Value Measurement | Significant Observable Inputs (Level 2) | U.S. Treasuries |  |  |
Pension and Post-retirement Plans |  |  |
Total | 8.9 | 5.6 |
Fair Value Measurement | Significant Observable Inputs (Level 2) | Municipal bonds |  |  |
Pension and Post-retirement Plans |  |  |
Total | 9.3 | 5.3 |
Fair Value Measurement | Significant Observable Inputs (Level 2) | Investment grade U.S. corporate bonds |  |  |
Pension and Post-retirement Plans |  |  |
Total | 5.3 | 2.4 |
Fair Value Measurement | Significant Observable Inputs (Level 2) | High-yield U.S. corporate bonds |  |  |
Pension and Post-retirement Plans |  |  |
Total | 6.3 | 6.0 |
Fair Value Measurement | Significant Unobservable Inputs (Level 3) |  |  |
Pension and Post-retirement Plans |  |  |
Total | 10.9 | 10.5 |
Fair Value Measurement | Significant Unobservable Inputs (Level 3) | Real estate partnerships interests |  |  |
Pension and Post-retirement Plans |  |  |
Total | 10.8 | 10.3 |
Fair Value Measurement | Significant Unobservable Inputs (Level 3) | Private equity partnership interests |  |  |
Pension and Post-retirement Plans |  |  |
Total | $ 0.1 | $ 0.2 |

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- Definition Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=49178875&loc=d3e12355-114930 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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