Income Taxes	6 Months Ended
Jun. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	U.S. Tax Reform In the fourth quarter of 2017, the Company recorded approximately $139.2 million in charges related to the impact of the Tax Act. Given the significant complexity of the Tax Act, anticipated guidance from the U.S. Treasury about implementing the Tax Act and the potential for additional guidance from the SEC or the FASB, the amount recorded by the Company in the fourth quarter of 2017 was provisional and will continue to be adjusted during 2018. The impact of the Tax Act is expected to be finalized no later than the fourth quarter of 2018. The aforementioned guidance and additional information regarding the Tax Act may also impact the Company's 2018 effective income tax rate, exclusive of any adjustment to the provisional charge. Any material revisions in our computations could adversely affect our cash flows and results of operations. During the first quarter of 2018, the Company recorded an additional charge of $0.6 million to adjust an accrual related to withholding taxes on planned repatriations. Uncertain Tax Positions At June 30, 2018, the Company had $30.6 million of unrecognized tax benefits recorded in Other liabilities and $1.2 million in Other current liabilities. If these unrecognized tax benefits were recognized, the effective tax rate would be affected. At June 30, 2018, the Company had accrued interest and penalties of $2.5 million classified in Other liabilities and $0.1 million in Other current liabilities. As of June 30, 2018, the Company’s aggregate provisions for uncertain tax positions, including interest and penalties, was$34.4 million associated with various tax positions asserted in various jurisdictions, none of which is individually material. The Company regularly repatriates a portion of current year earnings from select non–U.S. subsidiaries. No provision is made for additional withholding taxes on undistributed earnings of subsidiary companies that are intended and planned to be indefinitely invested in such subsidiaries. We intend to, and have plans to, reinvest these earnings indefinitely in our foreign subsidiaries to fund local operations and/or capital projects. The Company has ongoing income tax audits and legal proceedings which are at various stages of administrative or judicial review. In addition, the Company has open tax years with various taxing jurisdictions that range primarily from 2008 to 2017. Based on currently available information, we do not believe the ultimate outcome of any of these tax audits and other tax positions related to open tax years, when finalized, will have a material impact on our financial position. The Company also has other ongoing tax audits and legal proceedings that relate to indirect taxes, such as value-added taxes, sales and use taxes and property taxes, which are discussed in Note 13. Effective Tax Rate The effective tax rate for the three months ended June 30, 2018 was 18.7% compared with 22.7% for the three months ended June 30, 2017. The quarter-over-quarter decrease was largely due to a more favorable mix of earnings, a lower cost of repatriation and the re-measurement of loss provisions, partially offset by the impact from U.S. tax reform and other items (including the impact of current year transactions costs and certain non-taxable gains on foreign currency in prior year). The effective tax rate for the six months ended June 30, 2018 was 18.6% compared with 19.6% for the six months ended June 30, 2017. The year-over-year decrease was largely due to a more favorable mix of earnings, a lower cost of repatriation, the re-measurement of loss provisions and the release of a State valuation allowance related to prior years, partially offset by the impact of U.S. tax reform and other items (including the impact of current year transaction costs and certain non-taxable gains on foreign currency in prior year).

U.S. Tax Reform

In the fourth quarter of 2017, the Company recorded approximately $139.2 million in charges related to the impact of the Tax Act. Given the significant complexity of the Tax Act, anticipated guidance from the U.S. Treasury about implementing the Tax Act and the potential for additional guidance from the SEC or the FASB, the amount recorded by the Company in the fourth quarter of 2017 was provisional and will continue to be adjusted during 2018. The impact of the Tax Act is expected to be finalized no later than the fourth quarter of 2018. The aforementioned guidance and additional information regarding the Tax Act may also impact the Company's 2018 effective income tax rate, exclusive of any adjustment to the provisional charge. Any material revisions in our computations could adversely affect our cash flows and results of operations.

During the first quarter of 2018, the Company recorded an additional charge of $0.6 million to adjust an accrual related to withholding taxes on planned repatriations.

Uncertain Tax Positions

At June 30, 2018, the Company had $30.6 million of unrecognized tax benefits recorded in Other liabilities and $1.2 million in Other current liabilities. If these unrecognized tax benefits were recognized, the effective tax rate would be affected.

At June 30, 2018, the Company had accrued interest and penalties of $2.5 million classified in Other liabilities and $0.1 million in Other current liabilities.

As of June 30, 2018, the Company’s aggregate provisions for uncertain tax positions, including interest and penalties, was$34.4 million associated with various tax positions asserted in various jurisdictions, none of which is individually material.

The Company regularly repatriates a portion of current year earnings from select non–U.S. subsidiaries. No provision is made for additional withholding taxes on undistributed earnings of subsidiary companies that are intended and planned to be indefinitely invested in such subsidiaries. We intend to, and have plans to, reinvest these earnings indefinitely in our foreign subsidiaries to fund local operations and/or capital projects.

The Company has ongoing income tax audits and legal proceedings which are at various stages of administrative or judicial review. In addition, the Company has open tax years with various taxing jurisdictions that range primarily from 2008 to 2017. Based on currently available information, we do not believe the ultimate outcome of any of these tax audits and other tax positions related to open tax years, when finalized, will have a material impact on our financial position.

The Company also has other ongoing tax audits and legal proceedings that relate to indirect taxes, such as value-added taxes, sales and use taxes and property taxes, which are discussed in Note 13.

Effective Tax Rate

The effective tax rate for the three months ended June 30, 2018 was 18.7% compared with 22.7% for the three months ended June 30, 2017. The quarter-over-quarter decrease was largely due to a more favorable mix of earnings, a lower cost of repatriation and the re-measurement of loss provisions, partially offset by the impact from U.S. tax reform and other items (including the impact of current year transactions costs and certain non-taxable gains on foreign currency in prior year).

The effective tax rate for the six months ended June 30, 2018 was 18.6% compared with 19.6% for the six months ended June 30, 2017. The year-over-year decrease was largely due to a more favorable mix of earnings, a lower cost of repatriation, the re-measurement of loss provisions and the release of a State valuation allowance related to prior years, partially offset by the impact of U.S. tax reform and other items (including the impact of current year transaction costs and certain non-taxable gains on foreign currency in prior year).