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INCOME TAXES (Tables) | 3 Months Ended
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Mar. 31, 2017
Income Tax Disclosure [Abstract] |
Effective Tax Rate Reconciliation (Percent) | The following table accounts for the difference between the actual tax provision and the amounts obtained by applying the statutory U.S. federal income tax rate of 35.0% to income before taxes.
| Three Months Ended March 31,
Effective Tax Rate Reconciliation (Percent) | 2017 |  | 2016
Statutory federal tax rate | 35.0 | % |  | 35.0 | %
Salt depletion | (9.4 | ) |  | (3.4 | )
Stock-based compensation | (8.4 | ) |  | — |
Foreign rate differential | (3.1 | ) |  | (3.8 | )
U.S. tax on foreign earnings | 3.1 |  |  | 3.8 |
Dividends paid to CEOP | (0.4 | ) |  | (0.6 | )
State income taxes, net | 0.5 |  |  | (1.4 | )
Change in valuation allowance | — |  |  | 0.1 |
Change in tax contingencies | 1.1 |  |  | 1.6 |
Return to provision | 5.8 |  |  | — |
Other, net | 0.9 |  |  | 0.3 |
Effective tax rate | 25.1 | % |  | 31.6 | %
Unrecognized Tax Benefits | The amount of unrecognized tax benefits was as follows:
| March 31,
| 2017 |  | 2016
| ($ in millions)
Balance at beginning of year | $ | 38.4 |  |  | $ | 35.1 |
Increases for prior year tax positions | 4.9 |  |  | — |
Decreases for prior year tax positions | (0.7 | ) |  | (1.6 | )
Increases for current year tax positions | 0.7 |  |  | — |
Balance at end of period | $ | 43.3 |  |  | $ | 33.5 |
Tax Returns Subject to Examination | For our primary tax jurisdictions, the tax years that remain subject to examination are as follows:
| Tax Years
U.S. federal income tax | 2008; 2010 - 2016
U.S. state income tax | 2006 - 2016
Canadian federal income tax | 2012 - 2016
Brazil | 2014 - 2016
Germany | 2015 - 2016
China | 2014 - 2016
The Netherlands | 2014 - 2016
South Korea | 2014 - 2016

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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 + Details
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- Definition Tabular disclosure of tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities (i.e., uncertain tax positions) and other types of income tax contingencies, including: (1) the policy on classification of interest and penalties; (2) a tabular reconciliation of the total amounts of unrecognized tax benefits at the beginning and end of the period; the total amount(s) of: (3) unrecognized tax benefits that, if recognized, would affect the effective tax rate, and (4) interest and penalties recognized in each of the income statement and balance sheet; (5) for positions for which it is reasonably possible that the total amounts unrecognized will significantly change within 12 months of the reporting date the: (i) nature of the uncertainty, (ii) nature of the event that could occur that would cause the change, and (iii) an estimate of the range of the reasonably possible change or a statement that an estimate of the range cannot be made; and (6) a description of tax years that remain subject to examination by major tax jurisdictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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- Definition Tabular disclosure of income tax examinations that an enterprise is currently subject to or that have been completed in the current period typically including a description of the examination, the jurisdiction conducting the examination, the tax year(s) under examination, the likelihood of an unfavorable settlement, the range of possible losses, the liability recorded, the increase or decrease in the liability from the prior period, and any penalties and interest that have been recorded. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 55 -Paragraph 217 -URI http://asc.fasb.org/extlink&oid=51663037&loc=d3e36027-109320 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c),(d)(2)-(3) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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