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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2016
Income Tax Disclosure [Abstract] |
Roll-Forward of Unrecognized Tax Benefits and Associated Accrued Interest and Penalties | A roll-forward of unrecognized tax benefits and associated accrued interest and penalties is as follows:
(in millions) |  | Interest and Penalties |  |  | Unrecognized Tax Benefits |  |  | Total |
Opening balance at January 1, 2014 |  | $ | 1.1 |  |  | $ | 11.9 |  |  | $ | 13.0 |
Reductions for tax positions of prior periods |  |  | (0.4 | ) |  |  | (3.6 | ) |  |  | (4.0 | )
Additions for tax positions of prior periods |  |  | 0.0 |  |  |  | 0.1 |  |  |  | 0.1 |
Additions for current year tax positions |  |  | 0.0 |  |  |  | 0.2 |  |  |  | 0.2 |
Reductions due to lapsed statutes of limitations |  |  | (0.2 | ) |  |  | (2.9 | ) |  |  | (3.1 | )
Closing balance at December 31, 2014 |  |  | 0.5 |  |  |  | 5.7 |  |  |  | 6.2 |
Current |  |  | 0.0 |  |  |  | 0.0 |  |  |  | 0.0 |
Non-current |  | $ | 0.5 |  |  | $ | 5.7 |  |  | $ | 6.2 |
Opening balance at January 1, 2015 |  | $ | 0.5 |  |  | $ | 5.7 |  |  | $ | 6.2 |
Reductions for tax positions of prior periods |  |  | 0.0 |  |  |  | 0.0 |  |  |  | 0.0 |
Additions for tax positions of prior periods |  |  | 0.1 |  |  |  | 0.3 |  |  |  | 0.4 |
Additions for current year tax positions |  |  | 0.0 |  |  |  | 1.2 |  |  |  | 1.2 |
Reductions due to lapsed statutes of limitations |  |  | (0.3 | ) |  |  | (3.6 | ) |  |  | (3.9 | )
Closing balance at December 31, 2015 |  |  | 0.3 |  |  |  | 3.6 |  |  |  | 3.9 |
Current |  |  | 0.0 |  |  |  | 0.0 |  |  |  | 0.0 |
Non-current |  | $ | 0.3 |  |  | $ | 3.6 |  |  | $ | 3.9 |
Opening balance at January 1, 2016 |  | $ | 0.3 |  |  | $ | 3.6 |  |  | $ | 3.9 |
Reductions for tax positions of prior periods |  |  | (0.1 | ) |  |  | (0.6 | ) |  |  | (0.7 | )
Additions for tax positions of prior periods |  |  | 0.0 |  |  |  | 0.0 |  |  |  | 0.0 |
Additions for current year tax positions |  |  | 0.0 |  |  |  | 0.0 |  |  |  | 0.0 |
Reductions due to lapsed statutes of limitations |  |  | (0.1 | ) |  |  | (0.8 | ) |  |  | (0.9 | )
Closing balance at December 31, 2016 |  |  | 0.1 |  |  |  | 2.2 |  |  |  | 2.3 |
Current |  |  | 0.0 |  |  |  | 0.0 |  |  |  | 0.0 |
Non-current |  | $ | 0.1 |  |  | $ | 2.2 |  |  | $ | 2.3 |
Sources of Income before Income Taxes | The sources of income before income taxes were as follows:
(in millions) |  | 2016 |  |  | 2015 |  |  | 2014 |
Domestic |  | $ | 16.8 |  |  | $ | 52.7 |  |  | $ | 15.2 |
Foreign |  |  | 86.3 |  |  |  | 99.6 |  |  |  | 95.7 |
|  | $ | 103.1 |  |  | $ | 152.3 |  |  | $ | 110.9 |
Components of Income Tax Expense | The components of income tax expense are summarized as follows:
(in millions) |  | 2016 |  |  | 2015 |  |  | 2014 |
Current: |  |  |  |  |  |  |  |  |  |  |  |
Federal |  | $ | 4.4 |  |  | $ | 5.2 |  |  | $ | 4.5 |
State and local |  |  | 1.1 |  |  |  | 1.3 |  |  |  | 2.1 |
Foreign |  |  | 15.3 |  |  |  | 14.3 |  |  |  | 14.9 |
|  |  | 20.8 |  |  |  | 20.8 |  |  |  | 21.5 |
Deferred: |  |  |  |  |  |  |  |  |  |  |  |
Federal |  |  | (0.7 | ) |  |  | 12.8 |  |  |  | 3.3 |
State and local |  |  | (0.3 | ) |  |  | 0.5 |  |  |  | 0.3 |
Foreign |  |  | 2.0 |  |  |  | (1.3 | ) |  |  | 1.7 |
|  |  | 1.0 |  |  |  | 12.0 |  |  |  | 5.3 |
|  | $ | 21.8 |  |  | $ | 32.8 |  |  | $ | 26.8 |
Factors Effecting Effective Tax Rate from U.S. Federal Statutory Rate | The effective tax rate varies from the U.S. federal statutory rate because of the factors indicated below:
|  | 2016 |  |  | 2015 |  |  | 2014 |
Statutory rate |  |  | 35.0 | % |  |  | 35.0 | % |  |  | 35.0 | %
Foreign income inclusions |  |  | 1.0 |  |  |  | 1.8 |  |  |  | 5.5 |
Foreign tax rate differential |  |  | (16.6 | ) |  |  | (9.6 | ) |  |  | (14.6 | )
Tax (credit)/charge from previous years |  |  | (0.7 | ) |  |  | (0.5 | ) |  |  | 4.7 |
Net (credit) from unrecognized tax benefits |  |  | (1.6 | ) |  |  | (1.5 | ) |  |  | (6.2 | )
Foreign currency transactions |  |  | 2.4 |  |  |  | (1.9 | ) |  |  | 1.0 |
United Kingdom income tax rate reduction |  |  | (0.6 | ) |  |  | (0.7 | ) |  |  | 0.0 |
Other items and adjustments, net |  |  | 2.2 |  |  |  | (1.1 | ) |  |  | (1.2 | )
|  |  | 21.1 | % |  |  | 21.5 | % |  |  | 24.2 | %
Details of Deferred Tax Assets and Liabilities | Details of deferred tax assets and liabilities are analyzed as follows:
(in millions) |  | 2016 |  |  | 2015 |
Deferred tax assets: |  |  |  |  |  |  |  |
Stock options |  | $ | 5.5 |  |  | $ | 5.2 |
Net operating loss carry forwards |  |  | 18.2 |  |  |  | 2.7 |
Intangible assets |  |  | 3.7 |  |  |  | 3.3 |
Accretion expense |  |  | 5.1 |  |  |  | 4.8 |
Other |  |  | 9.5 |  |  |  | 6.0 |
Subtotal |  |  | 42.0 |  |  |  | 22.0 |
Less valuation allowance |  |  | 0.0 |  |  |  | 0.0 |
Total net deferred tax assets |  | $ | 42.0 |  |  | $ | 22.0 |
Deferred tax liabilities: |  |  |  |  |  |  |  |
Excess of book over tax basis in property, plant and equipment |  | $ | (13.0 | ) |  | $ | (4.1 | )
Goodwill amortization |  |  | (11.3 | ) |  |  | (11.3 | )
Intangible amortization |  |  | (26.7 | ) |  |  | (23.4 | )
Pension liabilities |  |  | (8.2 | ) |  |  | (10.0 | )
Other |  |  | (0.2 | ) |  |  | (0.7 | )
Total deferred tax liabilities |  | $ | (59.4 | ) |  | $ | (49.5 | )
Net deferred tax liability |  | $ | (17.4 | ) |  | $ | (27.5 | )
Current portion of deferred tax assets |  | $ | 0.0 |  |  | $ | 8.8 |
Deferred tax assets, net of current portion |  |  | 14.9 |  |  |  | 1.4 |
Current portion of deferred tax liabilities |  |  | 0.0 |  |  |  | 0.0 |
Deferred tax liabilities, net of current portion |  |  | (32.3 | ) |  |  | (37.7 | )
|  | $ | (17.4 | ) |  | $ | (27.5 | )

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