Income Taxes (Notes)	3 Months Ended
Mar. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Tax Reform On December 22, 2017, the U.S. enacted the TCJA that instituted fundamental changes to the U.S. Internal Revenue Code of 1986, as amended ("the Code"), which was effective January 1, 2018. We reflected an overall income tax liability for the year ended December 31, 2017 with respect to TCJA as a result of remeasuring our U.S. deferred tax assets and liabilities using the 21% rate and recognizing a one-time transition tax charge on the deemed repatriation of previously undistributed accumulated earnings and profits of our international subsidiaries. We have elected to pay the transition tax to the Internal Revenue Service (IRS) over a period of eight years, with the first installments being paid in 2018. Due to the significant and complex changes to the Code from the TCJA, the SEC issued staff Accounting Bulletin No. 118, "Income Tax Accounting Implications of the Tax Cuts and Jobs Act," (SAB 118). SAB 118 provides measurement period for up to one year for adjustments to be made to account for the effects of the TCJA. The Company reflected the income tax effects of those aspects of TCJA for which the accounting is complete. To the extent that the Company’s accounting for certain income tax effects of TCJA is incomplete but the Company is able to determine a reasonable estimate, the Company recorded a provisional estimate in the financial statements. For those items where a reasonable estimate could not be made, a provisional amount was not recorded and the Company continued to apply the provisions of the tax laws that were in effect immediately before the enactment of TCJA. As of March 31, 2018, we have not revised our initial provisional amount for the tax on the deemed repatriation of the accumulated earnings and profits of our international subsidiaries. We continue to gather additional information in order to more accurately compute this tax. Any associated U.S. state taxes will be recorded once the federal estimate is finalized. We anticipate this information will be available in the second half of 2018. In addition to the changes described above, TCJA imposes a U.S. tax on Global Intangible Low Taxed Income (“GILTI”) that is earned by certain foreign affiliates owned by a U.S. shareholder. The computation of GILTI is still subject to interpretation and additional clarifying guidance is expected, but is generally intended to impose tax on the earnings of a foreign corporation that are deemed to exceed a certain threshold return relative to the underlying business investment. We are still assessing impacts GILTI may have.

Income Taxes

Tax Reform

On December 22, 2017, the U.S. enacted the TCJA that instituted fundamental changes to the U.S. Internal Revenue Code of 1986, as amended ("the Code"), which was effective January 1, 2018.

We reflected an overall income tax liability for the year ended December 31, 2017 with respect to TCJA as a result of remeasuring our U.S. deferred tax assets and liabilities using the 21% rate and recognizing a one-time transition tax charge on the deemed repatriation of previously undistributed accumulated earnings and profits of our international subsidiaries. We have elected to pay the transition tax to the Internal Revenue Service (IRS) over a period of eight years, with the first installments being paid in 2018.

Due to the significant and complex changes to the Code from the TCJA, the SEC issued staff Accounting Bulletin No. 118, "Income Tax Accounting Implications of the Tax Cuts and Jobs Act," (SAB 118). SAB 118 provides measurement period for up to one year for adjustments to be made to account for the effects of the TCJA. The Company reflected the income tax effects of those aspects of TCJA for which the accounting is complete. To the extent that the Company’s accounting for certain income tax effects of TCJA is incomplete but the Company is able to determine a reasonable estimate, the Company recorded a provisional estimate in the financial statements. For those items where a reasonable estimate could not be made, a provisional amount was not recorded and the Company continued to apply the provisions of the tax laws that were in effect immediately before the enactment of TCJA.

As of March 31, 2018, we have not revised our initial provisional amount for the tax on the deemed repatriation of the accumulated earnings and profits of our international subsidiaries. We continue to gather additional information in order to more accurately compute this tax. Any associated U.S. state taxes will be recorded once the federal estimate is finalized. We anticipate this information will be available in the second half of 2018.

In addition to the changes described above, TCJA imposes a U.S. tax on Global Intangible Low Taxed Income (“GILTI”) that is earned by certain foreign affiliates owned by a U.S. shareholder. The computation of GILTI is still subject to interpretation and additional clarifying guidance is expected, but is generally intended to impose tax on the earnings of a foreign corporation that are deemed to exceed a certain threshold return relative to the underlying business investment. We are still assessing impacts GILTI may have.