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Other Comprehensive Income (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Beginning Balance | $ (122.1) | $ (137.2)
Other comprehensive income (loss) before reclassifications | 2.7 | 3.1
Income taxes | 0.0 | (0.2)
Net other comprehensive income (loss) before reclassifications | 2.7 | 2.9
Amounts reclassified from accumulated other comprehensive income (loss) | 1.6 | 1.7
Income taxes | (0.4) | (0.6)
Net amounts reclassified from cumulative other comprehensive income (loss) | 1.2 | 1.1
Total other comprehensive income (loss) | 3.9 | 4.0
Ending Balance | (134.9) | (133.2)
Foreign currency translation adjustments |  |
Beginning Balance | (39.7) | (46.3)
Other comprehensive income (loss) before reclassifications | 2.3 | 2.8
Income taxes | 0.0 | 0.0
Net other comprehensive income (loss) before reclassifications | 2.3 | 2.8
Amounts reclassified from accumulated other comprehensive income (loss) | 0.0 | 0.0
Income taxes | 0.0 | 0.0
Net amounts reclassified from cumulative other comprehensive income (loss) | 0.0 | 0.0
Total other comprehensive income (loss) | 2.3 | 2.8
Ending Balance | (37.4) | (43.5)
Actuarial loss, net of tax |  |
Beginning Balance | (79.5) | (87.7)
Other comprehensive income (loss) before reclassifications |  | (0.2)
Change benefit obligations, translation adjustment | 0.2 | (0.2)
Income taxes | 0.0 | 0.0
Net other comprehensive income (loss) before reclassifications | 0.2 | (0.2)
Amounts reclassified from accumulated other comprehensive income (loss) | 1.5 | 1.4
Income taxes | (0.4) | (0.5)
Net amounts reclassified from cumulative other comprehensive income (loss) | 1.1 | 0.9
Total other comprehensive income (loss) | 1.3 | 0.7
Ending Balance | (95.6) | (87.0)
Prior service cost, net of tax |  |
Beginning Balance | (4.9) | (5.2)
Other comprehensive income (loss) before reclassifications | 0.0 | 0.0
Income taxes | 0.0 | 0.0
Net other comprehensive income (loss) before reclassifications | 0.0 | 0.0
Amounts reclassified from accumulated other comprehensive income (loss) | 0.1 | 0.3
Income taxes | 0.0 | (0.1)
Net amounts reclassified from cumulative other comprehensive income (loss) | 0.1 | 0.2
Total other comprehensive income (loss) | 0.1 | 0.2
Ending Balance | (4.8) | (5.0)
Unrealized gain (loss) on investments |  |
Beginning Balance | 3.5 | 2.7
Other comprehensive income (loss) before reclassifications | 0.2 | 0.5
Income taxes |  | (0.2)
Net other comprehensive income (loss) before reclassifications | 0.2 | 0.3
Amounts reclassified from accumulated other comprehensive income (loss) | 0.0 | 0.0
Income taxes | 0.0 | 0.0
Net amounts reclassified from cumulative other comprehensive income (loss) | 0.0 | 0.0
Total other comprehensive income (loss) | 0.2 | 0.3
Ending Balance | 4.4 | 3.0
Other |  |
Beginning Balance | (1.5) | (0.7)
Other comprehensive income (loss) before reclassifications |  | 0.0
Income taxes | 0.0 | 0.0
Net other comprehensive income (loss) before reclassifications | 0.0 | 0.0
Amounts reclassified from accumulated other comprehensive income (loss) | 0.0 | 0.0
Income taxes | 0.0 | 0.0
Net amounts reclassified from cumulative other comprehensive income (loss) | 0.0 | 0.0
Total other comprehensive income (loss) | 0.0 | 0.0
Ending Balance | (1.5) | $ (0.7)
AOCI Attributable to Parent [Member] |  |
Beginning Balance | (122.1) |
Ending Balance | (134.9) |
Accounting Standards Update 2018-02 [Member] |  |
Effect of adoption of ASU 2018-02 | 0.0 |
Ending Balance | (16.7) |
Accounting Standards Update 2018-02 [Member] | Foreign currency translation adjustments |  |
Effect of adoption of ASU 2018-02 | 0.0 |
Accounting Standards Update 2018-02 [Member] | Actuarial loss, net of tax |  |
Effect of adoption of ASU 2018-02 | (17.4) |
Accounting Standards Update 2018-02 [Member] | Prior service cost, net of tax |  |
Effect of adoption of ASU 2018-02 | 0.0 |
Accounting Standards Update 2018-02 [Member] | Unrealized gain (loss) on investments |  |
Effect of adoption of ASU 2018-02 | 0.7 |
Accounting Standards Update 2018-02 [Member] | Other |  |
Effect of adoption of ASU 2018-02 | 0.0 |
Accounting Standards Update 2018-02 [Member] | AOCI Attributable to Parent [Member] |  |
Effect of adoption of ASU 2018-02 | $ (16.7) |

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