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Other Comprehensive Income (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2014 | Mar. 31, 2013 | Dec. 31, 2013 | Dec. 31, 2012
Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Foreign Currency Translation Adjustment, Net of Tax | $ (21.0) | $ (5.7) | $ (19.2) | $ (7.6)
Pension and Other Postretirement Benefit Plans, Net of Tax | (69.0) | (97.6) | (70.3) | (99.0)
Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax |  | (0.3) |  | (0.3)
Available-for-sale Securities Adjustment, Net of Tax | 2.1 | 1.3 | 2.0 | 1.0
Other, Net of Tax | (1.7) | (2.0) | (1.7) | (2.0)
Accumulated comprehensive loss | (89.6) | (104.3) | (89.2) | (107.9)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) | 0 | 0.1 |  |
Defined Benefit Plan, Amortization of Gains (Losses) | 1.4 | 1.8 |  |
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Transition Asset (Obligation), Recognized in Net Periodic Benefit Cost, before Tax | 0.4 | (0.1) |  |
Defined Benefit Plan, Net Periodic Benefit Cost | 1.8 | 1.8 |  |
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Transition Asset (Obligation), Recognized in Net Periodic Benefit Cost, Tax | 0.5 | 0.5 |  |
Foreign currency translation adjustments | (1.8) | 1.9 |  |
Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Net of Tax | 2.6 | 2.7 |  |
Unrealized loss on derivative instrument |  | 0 |  |
Unrealized gain on marketable securities, net of reversals | 0.1 | 0.3 |  |
Other Comprehensive Income, Other, Net of Tax | 0 | 0 |  |
Other comprehensive income | 0.9 | 4.9 |  |
Pension and Other Postretirement Benefit Plans, Net Prior Service Costs Arising During Period, Net of Tax | (1.3) | (1.3) |  |
Other comprehensive income (loss), net of tax | (0.4) | 3.6 |  |
Defined benefit pension plans | 1.3 | 1.4 |  |
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, Net of Tax | $ 1.3 | $ 1.3 |  |

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