Income Taxes	9 Months Ended
Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes On December 22, 2017, the Tax Act was signed into law, making significant changes to the taxation of U.S. business entities. The Tax Act reduced the U.S. corporate income tax rate from 35% to 21%, imposed a one-time transition tax in connection with the move from a worldwide tax system to a territorial tax system, provided for accelerated deductions for certain U.S. film production costs, imposed limitations on certain tax deductions such as executive compensation in future periods, and included numerous other provisions. As the Company has a March 31 fiscal year-end, the lower corporate income tax rate was phased in, resulting in a U.S. statutory federal rate of approximately 31.5% for the fiscal year ended March 31, 2018, and 21% for subsequent fiscal years. The Company's U.S. tax provision consists primarily of deferred tax benefits calculated at the 21% tax rate. In connection with the Tax Act, the SEC issued Staff Accounting Bulletin No. 118 (“SAB 118”) to provide guidance to companies that have not completed their accounting for the income tax effects of the Tax Act. Under SAB 118, provisional amounts can be recorded to the extent a reasonable estimate can be made. Additional tax effects and adjustments to previously recorded provisional amounts can be recorded upon obtaining, preparing, or analyzing additional information (including computations) within one year from the enactment date of the Tax Act. The Company previously made provisional estimates of the effects of the Tax Act, such as the measurement of deferred tax assets and liabilities, the tax effects of executive compensation, the one-time transition tax, net operating loss carryovers, foreign tax credits, and accelerated deductions for U.S. film costs. The estimated impact of the Tax Act was based on a preliminary review of the new law, subject to revision based upon further analysis and interpretation of the Tax Act. During the quarter ended December 31, 2018, the Company completed its analysis and its accounting for the Tax Act, and there were no material adjustments to its provisional estimates. For the quarters ended December 31, 2018 and 2017, the Company determined that a small change in its estimated pretax results for the years ending March 31, 2019 and 2018, respectively, would create a large change in its expected annual effective rate. Accordingly, it was determined that a reliable estimate of the expected annual effective tax rate could not be made. As a result, the Company computed its tax (provision) benefit using the cut-off method, which reflects the actual taxes attributable to year-to-date earnings or losses. The Company's income tax (provision) benefit differs from the federal statutory rate multiplied by pre-tax income (loss) due to the mix of the Company's pre-tax income (loss) generated across the various jurisdictions in which the Company operates and the tax deductions generated by the Company's capital structure. In addition, the Company's income tax benefit was impacted by certain minimum taxes imposed by the Tax Act and the nondeductible portion of the Company's shareholder litigation settlements. The Company's income tax (provision) benefit can be affected by many factors, including the overall level of pre-tax income, the mix of pre-tax income generated across the various jurisdictions in which the Company operates, changes in tax laws and regulations in those jurisdictions, further interpretation and legislative guidance regarding the new Tax Act, changes in valuation allowances on its deferred tax assets, tax planning strategies available to the Company, and other discrete items.

Income Taxes

On December 22, 2017, the Tax Act was signed into law, making significant changes to the taxation of U.S. business entities. The Tax Act reduced the U.S. corporate income tax rate from 35% to 21%, imposed a one-time transition tax in connection with the move from a worldwide tax system to a territorial tax system, provided for accelerated deductions for certain U.S. film production costs, imposed limitations on certain tax deductions such as executive compensation in future periods, and included numerous other provisions. As the Company has a March 31 fiscal year-end, the lower corporate income tax rate was phased in, resulting in a U.S. statutory federal rate of approximately 31.5% for the fiscal year ended March 31, 2018, and 21% for subsequent fiscal years. The Company's U.S. tax provision consists primarily of deferred tax benefits calculated at the 21% tax rate.

In connection with the Tax Act, the SEC issued Staff Accounting Bulletin No. 118 (“SAB 118”) to provide guidance to companies that have not completed their accounting for the income tax effects of the Tax Act. Under SAB 118, provisional amounts can be recorded to the extent a reasonable estimate can be made. Additional tax effects and adjustments to previously recorded provisional amounts can be recorded upon obtaining, preparing, or analyzing additional information (including computations) within one year from the enactment date of the Tax Act. The Company previously made provisional estimates of the effects of the Tax Act, such as the measurement of deferred tax assets and liabilities, the tax effects of executive compensation, the one-time transition tax, net operating loss carryovers, foreign tax credits, and accelerated deductions for U.S. film costs. The estimated impact of the Tax Act was based on a preliminary review of the new law, subject to revision based upon further analysis and interpretation of the Tax Act. During the quarter ended December 31, 2018, the Company completed its analysis and its accounting for the Tax Act, and there were no material adjustments to its provisional estimates.

For the quarters ended December 31, 2018 and 2017, the Company determined that a small change in its estimated pretax results for the years ending March 31, 2019 and 2018, respectively, would create a large change in its expected annual effective rate. Accordingly, it was determined that a reliable estimate of the expected annual effective tax rate could not be made. As a result, the Company computed its tax (provision) benefit using the cut-off method, which reflects the actual taxes attributable to year-to-date earnings or losses.

The Company's income tax (provision) benefit differs from the federal statutory rate multiplied by pre-tax income (loss) due to the mix of the Company's pre-tax income (loss) generated across the various jurisdictions in which the Company operates and the tax deductions generated by the Company's capital structure. In addition, the Company's income tax benefit was impacted by certain minimum taxes imposed by the Tax Act and the nondeductible portion of the Company's shareholder litigation settlements.

The Company's income tax (provision) benefit can be affected by many factors, including the overall level of pre-tax income, the mix of pre-tax income generated across the various jurisdictions in which the Company operates, changes in tax laws and regulations in those jurisdictions, further interpretation and legislative guidance regarding the new Tax Act, changes in valuation allowances on its deferred tax assets, tax planning strategies available to the Company, and other discrete items.