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Income Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2013 | Jun. 30, 2013 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Income Tax [Line Items] |  |  |  |  |  |
Deferred Tax Assets, Net, Current | $ 12.4 |  | $ 12.4 | $ (10.6) |  |
Release of valuation allowance |  | 102.4 |  |  |  |
Accumulated undistributed earnings of certain foreign subsidiaries | 59.2 |  | 59.2 | 87.8 |  |
Previously undistributed earnings of foreign subsidiaries to be repatriated in the future | 24.3 |  | 24.3 |  |  |
Deferred tax liabilities related to previously undistributed earnings of foreign subsidiaries to be repatriated in the future | 9.9 |  | 9.9 |  |  |
Deferred tax asset, federal net operating loss carryforwards | 7.5 |  | 7.5 | 20.9 |  |
Deferred tax asset, state net operating loss carryforwards | 7.7 |  | 7.7 | 2.2 |  |
Deferred tax asset, foreign net operating loss carryforwards | 5.2 |  | 5.2 | 8.2 |  |
Deferred tax asset, capital loss carryforwards |  |  |  | 12.8 |  |
Deferred Tax Assets, Tax Credit Carryforwards, Alternative Motor Vehicle Credits | 0.2 |  | 0.2 |  |  |
Deferred tax asset, U.S. research tax credit carryforwards | 7.9 |  | 7.9 | 6.3 |  |
Deferred tax asset, U.S. foreign tax credits carryforwards | 31.0 |  | 31.0 | 21.1 |  |
Deferred tax asset, U.S. alternative minimum tax credits carryforwards | 3.3 |  | 3.3 | 3.3 |  |
Deferred tax asset, valuation allowance | 9.8 | 10.4 | 9.8 | 131.8 |  |
Total deferred tax assets | 118.8 |  | 118.8 | 16.9 |  |
Income taxes paid |  |  | 4.0 | 2.9 | 4.2 |
Unrecognized tax benefits | 4.8 |  | 4.8 | 4.0 | 4.3 | 3.8
Unrecognized tax benefits that, if recognized, would impact our annual effective tax rate | 4.8 |  | 4.8 |  |  |
Unrecognized tax benefits that, interests | 0.1 |  | 0.1 |  |  |
Unrecognized tax benefits decrease due to potential expiration of statute of limitations and settlements with tax authorities |  |  | 2.3 |  |  |
Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Amount |  |  | (3.4) |  |  |
Decrease in valuation allowance | 6.7 |  |  |  |  |
Income tax (benefit) expense |  |  | (107.2) | 3.9 | 3.5 |
Capital Loss Carryforward |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |
Deferred tax asset, valuation allowance |  |  |  | 12.8 |  |
Capital Loss Carryforward | Minimum |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |
Deferred tax asset, tax credit carryforwards expiration year |  |  |  | 2013 |  |
Deferred Tax Asset Operating Loss Carryforwards State and Local |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |
Deferred tax asset, valuation allowance |  |  |  | 2.2 |  |
Deferred Tax Asset Operating Loss Carryforwards Foreign |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |
Deferred tax asset, valuation allowance |  |  |  | 8.3 |  |
Deferred Tax Asset Operating Loss Carryforwards Domestic |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |
Deferred tax asset, valuation allowance |  |  |  | 108.5 |  |
ERROR in label resolution. |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |
Deferred tax asset, tax credit carryforwards expiration year |  |  | 2019 | 2022 |  |
Internal Revenue Service (IRS) |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |
Deferred tax asset, net operating loss carryforwards expiration year |  |  | 2026 | 2018 |  |
State and Local Jurisdiction |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |
Deferred tax asset, net operating loss carryforwards expiration year |  |  | 2014 | 2019 |  |
Operating Loss Carryforwards | 4.7 |  | 4.7 |  |  |
Foreign Tax Authority |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |
Deferred tax asset, net operating loss carryforwards expiration year |  |  |  | 2030 |  |
Deferred tax asset, net operating loss carryforwards that has an indefinite life | 0.4 |  | 0.4 | 0.5 |  |
Deferred tax asset, net operating loss carryforwards subject to expiration |  |  |  | 7.7 |  |
Deferred tax asset, tax credit carryforwards expiration year |  |  | 2015 | 2015 |  |
Operating Loss Carryforwards | 5.1 |  | 5.1 |  |  |
Foreign Tax Authority | United Kingdom |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |
Income tax (benefit) expense |  |  | 0.8 |  |  |
Foreign Tax Authority | Finland |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |
Income tax (benefit) expense |  |  | $ (0.8) |  |  |

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