Income Taxes	9 Months Ended
Sep. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company’s provision for income taxes is based upon estimated annual tax rates for the year applied to federal, state and foreign income. The provision for income taxes decreased to $26.9 million in the third quarter of 2018 from $30.0 million in the same period in 2017. The effective tax rate decreased to 20.2% for the third quarter of 2018 compared to 26.4% during the same period in 2017 due to the enactment of the Tax Cuts and Jobs Act (the “Tax Act”), including the 14% decrease in the U.S. statutory income tax rate and the introduction of the Foreign Derived Intangible Income (“FDII”) deduction, as well as the excess tax benefits related to share-based compensation, offset by the removal of the domestic production activities deduction, the new Global Intangible Low-Taxed Income (“GILTI”) provision, increased limitation on the deductibility of executive compensation and the mix of global pre-tax income among jurisdictions. The provision for income taxes decreased to $87.7 million in the nine months ended September 30, 2018 from $88.2 million in the same period in 2017. The effective tax rate decreased to 21.9% for the nine months ended September 30, 2018 compared to 26.6% in the same period in 2017 due to the enactment of the Tax Act, including the 14% decrease in the U.S. statutory income tax rate and the introduction of the FDII deduction, as well as the excess tax benefits related to share-based compensation, offset by the removal of the domestic production activities deduction, the new GILTI provision, increased limitation on the deductibility of executive compensation and the mix of global pre-tax income among jurisdictions. Because the changes included in the Tax Act are broad and complex, on December 22, 2017, the SEC issued Staff Accounting Bulletin No. 118, Income Tax Accounting Implications of the Tax Cuts and Jobs Act (“SAB 118”), which provides guidance on accounting for the tax effects of the Tax Act. SAB 118 provides a measurement period that should not extend beyond one year from the Tax Act enactment date for companies to complete the accounting under ASC 740. In accordance with SAB 118, a company must reflect the income tax effects of those aspects of the Tax Act for which the accounting under ASC 740 is complete. To the extent that a company’s accounting for certain income tax effects of the Tax Act is incomplete but it is able to determine a reasonable estimate, it must record a provisional estimate to be included in the financial statements. If a company cannot determine a provisional estimate to be included in the financial statements, it should continue to apply ASC 740 on the basis of the provision of the tax laws that were in effect immediately before the enactment of the Tax Act. While the Company is able to make reasonable estimates of the impact of the reduction in the corporate rate and the deemed repatriation transition tax, the final impact of the Tax Act may differ from these estimates, due to, among other things, changes in the Company’s interpretations and assumptions, additional guidance that may be issued by either the Internal Revenue Service or the U.S. Department of Treasury and actions the Company may take. The Company is continuing to gather additional information to determine the final impact. While the Company was able to make reasonable estimates of certain impacts (and therefore, recorded provisional adjustments), the Company’s accounting for the following elements of the Tax Act, for the nine months ended September 30, 2018, is incomplete as follows: Reduction of U.S. federal corporate tax rate: The Tax Act reduces the corporate tax rate to 21%, effective January 1, 2018. The Company recorded a provisional decrease to its deferred tax liability of $40.6 million, with a corresponding adjustment to deferred income tax benefit of $40.6 million for the year ended December 31, 2017. While the Company is able to make a reasonable estimate of the impact of the reduction in the corporate rate, it may be affected by other analyses related to the Tax Act which are still ongoing, including, but not limited to, the state tax effect of adjustments made to federal temporary differences. For the three and nine months ended September 30, 2018, the Company has not made adjustments to the deferred tax liability and corresponding deferred income tax benefit recorded at December 31, 2017. Deemed Repatriation Transition Tax: The Deemed Repatriation Transition Tax (“Transition Tax”) is a tax on previously untaxed accumulated and current earnings and profits of certain foreign subsidiaries. To determine the amount of the Transition Tax, the Company must determine, in addition to other factors, the amount of post-1986 earnings and profits of the relevant subsidiaries as well as the amount of non-U.S. income taxes paid on such earnings. The Company was able to make a reasonable estimate of the Transition Tax and recorded a provisional Transition Tax obligation of $30.3 million for the year ended December 31, 2017. During the first quarter, the IRS released Revenue Procedure 2018-17 and Notice 2018-26, the effects of which increased the provisional Transition Tax by $0.1 million. No adjustments were made to the Transition Tax during the second or third quarter of 2018, therefore, as of September 30, 2018, the Company had a provisional Transition Tax obligation of $30.4 million. The IRS guidance discussed above also had the impact of increasing the 2017 income tax liability determined without regard to the Transition Tax by $6.4 million, which was recorded in the first quarter of 2018. The Company is continuing to gather additional information to more precisely compute the amount of Transition Tax. Removal of permanent reinvestment representation on certain undistributed foreign earnings: As a result of the enactment of the Tax Act, the Company has decided to remove the Permanent Reinvestment Representation with respect to certain of its subsidiaries in Canada, Italy and Germany as of December 31, 2017. Under the mandatory repatriation provisions of the Tax Act, post-1986 undistributed earnings were taxed in the U.S. as if they were distributed before December 31, 2017. However, with the removal of the permanent reinvestment representation with respect to select subsidiaries in Canada, Italy and Germany, the non-creditable withholding taxes and any local country taxes associated with future dividends from these subsidiaries are required to be recorded as deferred tax liabilities as of the end of 2017. The Company recorded a provisional increase in its deferred tax liability of $9.2 million, with a corresponding adjustment to deferred income tax expense of $9.2 million for the year ending December 31, 2017. During the second quarter the deferred tax liability was reduced by $1.4 million to $7.8 million. No adjustments were made to the deferred tax liability during the third quarter of 2018. The Company is considering removal of the permanent reinvestment representation with respect to its remaining subsidiaries, which it estimates would result in an additional $10.8 million increase to its deferred tax liability. Global intangible low taxed income: The Tax Act creates a new requirement that certain income (i.e. GILTI) earned by controlled foreign corporations (“CFCs”) must be included currently in the gross income of the CFCs’ U.S. shareholder. GILTI is the excess of the U.S. shareholder’s “net CFC tested income” over the net deemed intangible income return, which is currently defined as the excess of (1) 10% of the aggregate of the U.S. shareholder’s pro rata share of the qualified business asset investment of each CFC with respect to which it is a U.S. shareholder over (2) the amount of certain interest expense taken into account in the determination of net CFC-tested income. In January 2018, FASB released guidance on accounting for the GILTI tax. The guidance indicates that either accounting for deferred taxes related to GILTI tax inclusions or treating the GILTI tax as a period cost are both acceptable methods subject to an accounting policy election. Because of the complexity of the new GILTI tax rules, the Company is continuing to evaluate this provision of the Tax Act and the application of ASC 740. The Company and its subsidiaries file income tax returns in the U.S. federal jurisdiction, and various state and foreign jurisdictions. Due to the potential for resolution of federal, state and foreign examinations, and the expiration of various statutes of limitation, it is reasonably possible that the Company’s gross unrecognized tax benefits balance may change within the next twelve months by a range of zero to $1.3 million.

The provision for income taxes decreased to $87.7 million in the nine months ended September 30, 2018 from $88.2 million in the same period in 2017. The effective tax rate decreased to 21.9% for the nine months ended September 30, 2018 compared to 26.6% in the same period in 2017 due to the enactment of the Tax Act, including the 14% decrease in the U.S. statutory income tax rate and the introduction of the FDII deduction, as well as the excess tax benefits related to share-based compensation, offset by the removal of the domestic production activities deduction, the new GILTI provision, increased limitation on the deductibility of executive compensation and the mix of global pre-tax income among jurisdictions.

Because the changes included in the Tax Act are broad and complex, on December 22, 2017, the SEC issued Staff Accounting Bulletin No. 118, Income Tax Accounting Implications of the Tax Cuts and Jobs Act (“SAB 118”), which provides guidance on accounting for the tax effects of the Tax Act. SAB 118 provides a measurement period that should not extend beyond one year from the Tax Act enactment date for companies to complete the accounting under ASC 740. In accordance with SAB 118, a company must reflect the income tax effects of those aspects of the Tax Act for which the accounting under ASC 740 is complete. To the extent that a company’s accounting for certain income tax effects of the Tax Act is incomplete but it is able to determine a reasonable estimate, it must record a provisional estimate to be included in the financial statements. If a company cannot determine a provisional estimate to be included in the financial statements, it should continue to apply ASC 740 on the basis of the provision of the tax laws that were in effect immediately before the enactment of the Tax Act. While the Company is able to make reasonable estimates of the impact of the reduction in the corporate rate and the deemed repatriation transition tax, the final impact of the Tax Act may differ from these estimates, due to, among other things, changes in the Company’s interpretations and assumptions, additional guidance that may be issued by either the Internal Revenue Service or the U.S. Department of Treasury and actions the Company may take. The Company is continuing to gather additional information to determine the final impact. While the Company was able to make reasonable estimates of certain impacts (and therefore, recorded provisional adjustments), the Company’s accounting for the following elements of the Tax Act, for the nine months ended September 30, 2018, is incomplete as follows:

Reduction of U.S. federal corporate tax rate: The Tax Act reduces the corporate tax rate to 21%, effective January 1, 2018. The Company recorded a provisional decrease to its deferred tax liability of $40.6 million, with a corresponding adjustment to deferred income tax benefit of $40.6 million for the year ended December 31, 2017. While the Company is able to make a reasonable estimate of the impact of the reduction in the corporate rate, it may be affected by other analyses related to the Tax Act which are still ongoing, including, but not limited to, the state tax effect of adjustments made to federal temporary differences. For the three and nine months ended September 30, 2018, the Company has not made adjustments to the deferred tax liability and corresponding deferred income tax benefit recorded at December 31, 2017.

Deemed Repatriation Transition Tax: The Deemed Repatriation Transition Tax (“Transition Tax”) is a tax on previously untaxed accumulated and current earnings and profits of certain foreign subsidiaries. To determine the amount of the Transition Tax, the Company must determine, in addition to other factors, the amount of post-1986 earnings and profits of the relevant subsidiaries as well as the amount of non-U.S. income taxes paid on such earnings. The Company was able to make a reasonable estimate of the Transition Tax and recorded a provisional Transition Tax obligation of $30.3 million for the year ended December 31, 2017. During the first quarter, the IRS released Revenue Procedure 2018-17 and Notice 2018-26, the effects of which increased the provisional Transition Tax by $0.1 million. No adjustments were made to the Transition Tax during the second or third quarter of 2018, therefore, as of September 30, 2018, the Company had a provisional Transition Tax obligation of $30.4 million. The IRS guidance discussed above also had the impact of increasing the 2017 income tax liability determined without regard to the Transition Tax by $6.4 million, which was recorded in the first quarter of 2018. The Company is continuing to gather additional information to more precisely compute the amount of Transition Tax.

Removal of permanent reinvestment representation on certain undistributed foreign earnings: As a result of the enactment of the Tax Act, the Company has decided to remove the Permanent Reinvestment Representation with respect to certain of its subsidiaries in Canada, Italy and Germany as of December 31, 2017. Under the mandatory repatriation provisions of the Tax Act, post-1986 undistributed earnings were taxed in the U.S. as if they were distributed before December 31, 2017. However, with the removal of the permanent reinvestment representation with respect to select subsidiaries in Canada, Italy and Germany, the non-creditable withholding taxes and any local country taxes associated with future dividends from these subsidiaries are required to be recorded as deferred tax liabilities as of the end of 2017. The Company recorded a provisional increase in its deferred tax liability of $9.2 million, with a corresponding adjustment to deferred income tax expense of $9.2 million for the year ending December 31, 2017. During the second quarter the deferred tax liability was reduced by $1.4 million to $7.8 million. No adjustments were made to the deferred tax liability during the third quarter of 2018. The Company is considering removal of the permanent reinvestment representation with respect to its remaining subsidiaries, which it estimates would result in an additional $10.8 million increase to its deferred tax liability.

Global intangible low taxed income: The Tax Act creates a new requirement that certain income (i.e. GILTI) earned by controlled foreign corporations (“CFCs”) must be included currently in the gross income of the CFCs’ U.S. shareholder. GILTI is the excess of the U.S. shareholder’s “net CFC tested income” over the net deemed intangible income return, which is currently defined as the excess of (1) 10% of the aggregate of the U.S. shareholder’s pro rata share of the qualified business asset investment of each CFC with respect to which it is a U.S. shareholder over (2) the amount of certain interest expense taken into account in the determination of net CFC-tested income. In January 2018, FASB released guidance on accounting for the GILTI tax. The guidance indicates that either accounting for deferred taxes related to GILTI tax inclusions or treating the GILTI tax as a period cost are both acceptable methods subject to an accounting policy election. Because of the complexity of the new GILTI tax rules, the Company is continuing to evaluate this provision of the Tax Act and the application of ASC 740.

The Company and its subsidiaries file income tax returns in the U.S. federal jurisdiction, and various state and foreign jurisdictions. Due to the potential for resolution of federal, state and foreign examinations, and the expiration of various statutes of limitation, it is reasonably possible that the Company’s gross unrecognized tax benefits balance may change within the next twelve months by a range of zero to $1.3 million.