Income Taxes	9 Months Ended
Sep. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Laureate uses the liability method to account for income taxes. Deferred income taxes reflect the net tax effects of temporary differences between the carrying amount of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. For interim purposes, we also apply ASC 740-270, "Income Taxes - Interim Reporting." Laureate's income tax provisions for all periods consist of federal, state and foreign income taxes. The tax provisions for the nine months ended September 30, 2018 and 2017 were based on estimated full-year effective tax rates, after giving effect to significant items related specifically to the interim periods, including the mix of income for the period between higher-taxed and lower-taxed jurisdictions. Laureate has operations in multiple countries at various statutory tax rates or which are tax-exempt entities, and other operations that are loss-making entities for which it is not more likely than not that a tax benefit will be realized on the loss. The Tax Cuts & Jobs Act (TCJA) TCJA was enacted in December 2017. Among other things, the TCJA reduces the U.S. federal corporate tax rate from 35% to 21% beginning in 2018, requires companies to pay a one-time transition tax on previously unremitted earnings of non-U.S. subsidiaries that were previously tax deferred and creates new taxes on certain foreign-sourced earnings. The SEC staff issued Staff Accounting Bulletin (SAB) 118, which provides guidance on accounting for enactment effects of the TCJA. SAB 118 provides a measurement period of up to one year from the TCJA’s enactment date for companies to complete their accounting under ASC 740. In accordance with SAB 118, to the extent that a company’s accounting for certain income tax effects of the TCJA is incomplete but it is able to determine a reasonable estimate, it must record a provisional estimate in its financial statements. If a company cannot determine a provisional estimate to be included in its financial statements, it should continue to apply ASC 740 on the basis of the provisions of the tax laws that were in effect immediately before the enactment of the TCJA. Transition Tax The transition tax is a tax on previously untaxed accumulated and current earnings and profits (E&P) of certain of the Company’s non-U.S. subsidiaries. To determine the amount of the transition tax, Laureate must determine, in addition to other factors, the amount of post-1986 E&P of the relevant subsidiaries, as well as the amount of non-U.S. income taxes paid on such earnings. Further, the transition tax is based in part on the amount of those earnings held in cash and other specified assets. Laureate was able to make a reasonable estimate of the transition tax and recorded a provisional obligation resulting in additional tax expense of $149,800 in the fourth quarter of 2017. However, Laureate was able to offset this liability with 2017 losses and, under alternative minimum tax, up to 90% of the remaining liability, with existing net operating losses, resulting in a net liability of $3,200. Additionally, the TCJA repeals the corporate alternative minimum tax prospectively. Thus, Laureate recorded a deferred tax asset for an amount equal to the payable under the alternative minimum tax, resulting in no net income tax expense related to the transition tax. The Company is continuing to gather additional information and will consider additional technical guidance to more precisely compute and account for the amount of the transition tax. This amount may change when Laureate finalizes the calculation of post-1986 foreign E&P previously deferred from U.S. federal taxation and finalizes the amounts held in cash or other specified assets. Remeasurement of Deferred Tax Assets/Liabilities Laureate remeasured certain deferred tax assets and liabilities based on the rates at which they are expected to reverse, which is generally 21% under the TCJA and recorded a tax benefit in the amount of $66,900. Additionally, Laureate recorded a tax benefit related to the valuation allowance release, net of rate adjustment, on the deferred tax assets other than NOLs that, when realized, will become indefinite-lived NOLs in the amount of $70,700. During the nine months ended September 30, 2018, the company recorded an additional benefit of $400 related to release of valuation allowance for state conformity. Laureate is still analyzing certain aspects of the TCJA, including state conformity, considering additional technical guidance, and refining its calculations, which could potentially affect the measurement of these balances or potentially give rise to new deferred tax amounts. Permanent Reinvestment Laureate also is considering other impacts of the 2017 enactment of the TCJA including, but not limited to, effects on the Company’s indefinite-reinvestment assertion. Laureate previously has not provided deferred taxes on unremitted earnings attributable to international companies that have been considered to be reinvested indefinitely. Laureate is still analyzing the full effects of the TCJA, which may cause some reassessment of previous indefinite-reinvestment assertions with respect to certain jurisdictions. Global Low-Taxed Income (GILTI) Laureate is considering the potential impacts of the GILTI provision within the TCJA on deferred tax assets/liabilities. During the third quarter of 2018, the Company estimated the GILTI provision based on guidance and data available at that time. Currently, Laureate has not yet elected a policy as to whether it will recognize deferred taxes for basis differences expected to reverse as GILTI or whether Laureate will account for GILTI as period costs if and when incurred. Laureate is not aware of other elements of the TCJA for which the Company was not yet able to make reasonable estimates of the enactment impact and for which it would continue accounting for them in accordance with ASC 740 on the basis of the tax laws in effect before the TCJA. ICE Audit As previously disclosed in our 2017 Form 10-K, during 2010 and 2013, Laureate was notified by the Spain Tax Authorities (STA) that two tax audits of our Spanish subsidiaries were being initiated for 2006 through 2007, and for 2008 through 2010, respectively. On June 29, 2012, the STA issued a final assessment to Iniciativas Culturales de España, S.L. (ICE), our Spanish holding company, for EUR 11,051 ($13,000 at September 30, 2018), including interest, for the 2006 through 2007 period. Laureate has appealed this final assessment related to the 2006 through 2007 period and issued a cash-collateralized letter of credit in July 2012, in order to continue the appeal process. In October 2015, the STA issued a final assessment to ICE for the 2008 through 2010 period for approximately EUR 17,187 (approximately US $20,200 at September 30, 2018), including interest, for those three years. In order to continue the appeals process, we issued cash-collateralized letters of credit for the 2008 to 2010 period assessment amount, plus interest and surcharges. As of December 31, 2017, we had issued total cash-collateralized letters of credit for the ICE tax audit matters of EUR 33,282 (US $39,505 at December 31, 2017), as also described in Note 10, Commitments and Contingencies. During the quarter ended June 30, 2015, the Company reassessed its position regarding the ICE tax audit matters as a result of recent adverse decisions from the Spanish Supreme Court and the Spanish National Court on cases for taxpayers with similar facts and determined that it could no longer support a more-likely-than-not position. As a result, during 2015, the Company recorded a provision totaling EUR 37,610 (approximately US $42,100). The Company plans to continue the appeals process for the periods already audited and assessed. During the second quarter of 2016, we were notified by the STA that tax audits of the Spanish subsidiaries were also being initiated for 2011 and 2012, and in July 2017 the tax audit was extended to include 2013. In October of 2018, the STA issued a final assessment to ICE for the 2011 through 2013 period totaling EUR 4,066 (approximately US $4,800 at September 30, 2018), including interest. Also, during the second quarter of 2016, the Regional Administrative Court issued a decision against the Company on its appeal. The Company has further appealed at the Highest Administrative Court level, which appeal was rejected on January 23, 2018. The Company has appealed both decisions to the National Court. In the first quarter of 2018, the Company made payments to the STA totaling approximately EUR 29,600 (approximately US $34,800 at September 30, 2018) in order to reduce the amount of future interest that could be incurred as the appeals process continues. The payments were made using the restricted cash that had collateralized the letters of credit discussed above and reduced the liability that had been recorded for this income tax contingency.

Income Taxes

Laureate uses the liability method to account for income taxes. Deferred income taxes reflect the net tax effects of temporary differences between the carrying amount of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. For interim purposes, we also apply ASC 740-270, "Income Taxes - Interim Reporting."

Laureate's income tax provisions for all periods consist of federal, state and foreign income taxes. The tax provisions for the nine months ended September 30, 2018 and 2017 were based on estimated full-year effective tax rates, after giving effect to significant items related specifically to the interim periods, including the mix of income for the period between higher-taxed and lower-taxed jurisdictions. Laureate has operations in multiple countries at various statutory tax rates or which are tax-exempt entities, and other operations that are loss-making entities for which it is not more likely than not that a tax benefit will be realized on the loss.

The Tax Cuts & Jobs Act (TCJA)

TCJA was enacted in December 2017. Among other things, the TCJA reduces the U.S. federal corporate tax rate from 35% to 21% beginning in 2018, requires companies to pay a one-time transition tax on previously unremitted earnings of non-U.S. subsidiaries that were previously tax deferred and creates new taxes on certain foreign-sourced earnings. The SEC staff issued Staff Accounting Bulletin (SAB) 118, which provides guidance on accounting for enactment effects of the TCJA. SAB 118 provides a measurement period of up to one year from the TCJA’s enactment date for companies to complete their accounting under ASC 740. In accordance with SAB 118, to the extent that a company’s accounting for certain income tax effects of the TCJA is incomplete but it is able to determine a reasonable estimate, it must record a provisional estimate in its financial statements. If a company cannot determine a provisional estimate to be included in its financial statements, it should continue to apply ASC 740 on the basis of the provisions of the tax laws that were in effect immediately before the enactment of the TCJA.

Transition Tax

The transition tax is a tax on previously untaxed accumulated and current earnings and profits (E&P) of certain of the Company’s non-U.S. subsidiaries. To determine the amount of the transition tax, Laureate must determine, in addition to other factors, the amount of post-1986 E&P of the relevant subsidiaries, as well as the amount of non-U.S. income taxes paid on such earnings. Further, the transition tax is based in part on the amount of those earnings held in cash and other specified assets. Laureate was able to make a reasonable estimate of the transition tax and recorded a provisional obligation resulting in additional tax expense of $149,800 in the fourth quarter of 2017. However, Laureate was able to offset this liability with 2017 losses and, under alternative minimum tax, up to 90% of the remaining liability, with existing net operating losses, resulting in a net liability of $3,200. Additionally, the TCJA repeals the corporate alternative minimum tax prospectively. Thus, Laureate recorded a deferred tax asset for an amount equal to the payable under the alternative minimum tax, resulting in no net income tax expense related to the transition tax. The Company is continuing to gather additional information and will consider additional technical guidance to more precisely compute and account for the amount of the transition tax. This amount may change when Laureate finalizes the calculation of post-1986 foreign E&P previously deferred from U.S. federal taxation and finalizes the amounts held in cash or other specified assets.

Remeasurement of Deferred Tax Assets/Liabilities

Laureate remeasured certain deferred tax assets and liabilities based on the rates at which they are expected to reverse, which is generally 21% under the TCJA and recorded a tax benefit in the amount of $66,900. Additionally, Laureate recorded a tax benefit related to the valuation allowance release, net of rate adjustment, on the deferred tax assets other than NOLs that, when realized, will become indefinite-lived NOLs in the amount of $70,700. During the nine months ended September 30, 2018, the company recorded an additional benefit of $400 related to release of valuation allowance for state conformity. Laureate is still analyzing certain aspects of the TCJA, including state conformity, considering additional technical guidance, and refining its calculations, which could potentially affect the measurement of these balances or potentially give rise to new deferred tax amounts.

Permanent Reinvestment

Laureate also is considering other impacts of the 2017 enactment of the TCJA including, but not limited to, effects on the Company’s indefinite-reinvestment assertion. Laureate previously has not provided deferred taxes on unremitted earnings attributable to international companies that have been considered to be reinvested indefinitely. Laureate is still analyzing the full effects of the TCJA, which may cause some reassessment of previous indefinite-reinvestment assertions with respect to certain jurisdictions.

Global Low-Taxed Income (GILTI)

Laureate is considering the potential impacts of the GILTI provision within the TCJA on deferred tax assets/liabilities. During the third quarter of 2018, the Company estimated the GILTI provision based on guidance and data available at that time. Currently, Laureate has not yet elected a policy as to whether it will recognize deferred taxes for basis differences expected to reverse as GILTI or whether Laureate will account for GILTI as period costs if and when incurred. Laureate is not aware of other elements of the TCJA for which the Company was not yet able to make reasonable estimates of the enactment impact and for which it would continue accounting for them in accordance with ASC 740 on the basis of the tax laws in effect before the TCJA.

ICE Audit

As previously disclosed in our 2017 Form 10-K, during 2010 and 2013, Laureate was notified by the Spain Tax Authorities (STA) that two tax audits of our Spanish subsidiaries were being initiated for 2006 through 2007, and for 2008 through 2010, respectively. On June 29, 2012, the STA issued a final assessment to Iniciativas Culturales de España, S.L. (ICE), our Spanish holding company, for EUR 11,051 ($13,000 at September 30, 2018), including interest, for the 2006 through 2007 period. Laureate has appealed this final assessment related to the 2006 through 2007 period and issued a cash-collateralized letter of credit in July 2012, in order to continue the appeal process. In October 2015, the STA issued a final assessment to ICE for the 2008 through 2010 period for approximately EUR 17,187 (approximately US $20,200 at September 30, 2018), including interest, for those three years. In order to continue the appeals process, we issued cash-collateralized letters of credit for the 2008 to 2010 period assessment amount, plus interest and surcharges. As of December 31, 2017, we had issued total cash-collateralized letters of credit for the ICE tax audit matters of EUR 33,282 (US $39,505 at December 31, 2017), as also described in Note 10, Commitments and Contingencies.

During the quarter ended June 30, 2015, the Company reassessed its position regarding the ICE tax audit matters as a result of recent adverse decisions from the Spanish Supreme Court and the Spanish National Court on cases for taxpayers with similar facts and determined that it could no longer support a more-likely-than-not position. As a result, during 2015, the Company recorded a provision totaling EUR 37,610 (approximately US $42,100). The Company plans to continue the appeals process for the periods already audited and assessed. During the second quarter of 2016, we were notified by the STA that tax audits of the Spanish subsidiaries were also being initiated for 2011 and 2012, and in July 2017 the tax audit was extended to include 2013. In October of 2018, the STA issued a final assessment to ICE for the 2011 through 2013 period totaling EUR 4,066 (approximately US $4,800 at September 30, 2018), including interest. Also, during the second quarter of 2016, the Regional Administrative Court issued a decision against the Company on its appeal. The Company has further appealed at the Highest Administrative Court level, which appeal was rejected on January 23, 2018. The Company has appealed both decisions to the National Court. In the first quarter of 2018, the Company made payments to the STA totaling approximately EUR 29,600 (approximately US $34,800 at September 30, 2018) in order to reduce the amount of future interest that could be incurred as the appeals process continues. The payments were made using the restricted cash that had collateralized the letters of credit discussed above and reduced the liability that had been recorded for this income tax contingency.