Contingencies	3 Months Ended
Jun. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Contingencies	Contingencies From time to time, the Company is involved in certain claims and legal proceedings arising in the normal course of business. In addition, the matters discussed below under the captions Litigation and Appraisal have arisen in connection with the Starz merger. The Company establishes an accrued liability for legal claims when the Company determines that a loss is both probable and the amount of the loss can be reasonably estimated. Once established, accruals are adjusted from time to time, as appropriate, in light of additional information. The amount of any loss ultimately incurred in relation to matters for which an accrual has been established may be higher or lower than the amounts accrued for such matters. Due to the inherent difficulty of predicting the outcome of litigation and claims, the Company often cannot predict what the eventual outcome of the pending matters will be, what the timing of the ultimate resolution of these matters will be, or what the eventual loss, if any, related to each pending matter may be. Accordingly, at this time, the Company has determined a loss related to these matters in excess of accrued liabilities is reasonably possible, however a reasonable estimate of the possible loss or range of loss cannot be made at this time. The Company believes a portion of the losses that may be recognized, if any, would ultimately be recovered from insurance proceeds. Litigation Between July 19, 2016 and August 30, 2016, seven putative class action complaints were filed by purported Starz stockholders in the Court of Chancery of the State of Delaware. These actions have been consolidated into In re Starz Stockholder Litigation, Consolidated C.A. No. 12584-VCG, and the plaintiffs in the consolidated action filed a verified consolidated class action complaint on August 16, 2016. On August 18, 2016, plaintiffs filed a motion for expedited proceedings. On September 22, 2016, the court denied the motion. The defendants filed answers to the verified consolidated class action complaint on January 24, 2017. On May 16, 2018, the plaintiffs filed a verified amended consolidated class action complaint. The amended complaint names as defendants former members of the board of directors of Starz Susan Lyne, Andrew Heller, Greg Maffei, Christopher Albrecht, Daniel E. Sanchez, and Charles Y. Tanabe. The amended complaint also names as defendants Dr. Malone and Lions Gate. The amended complaint alleges, among other things, that the members of the Starz board of directors breached fiduciary duties owed to Starz and the holders of Starz Series A common stock in connection with the merger and related transactions; that Dr. Malone was a controlling stockholder of Starz who breached fiduciary duties owed to other Starz stockholders in connection with the merger and related transactions; and that Lions Gate aided and abetted such breaches of fiduciary duty. On June 18, 2018, the defendants (except Mr. Heller and Ms. Lyne) filed answers to the amended complaint. On July 3, 2018, Mr. Heller and Ms. Lyne filed a motion seeking summary judgment on the claims against them. The court has entered a scheduling order providing for a trial to commence in the second half of fiscal 2019. Defendants intend to defend the action vigorously. On August 9, 2016, a putative class action complaint was filed by a purported Starz stockholder in the District Court for the City and County of Denver, Colorado: Gross v. John C. Malone, et al., 2016-CV-32873. The complaint names as defendants the members of the board of directors of Starz, Dr. Malone and Robert Bennett, as well as Lions Gate and an affiliated entity. The complaint alleges, among other things, that the members of the Starz board of directors breached fiduciary duties owed to Starz and the holders of Starz Series A common stock in connection with the merger and the transactions contemplated by the merger agreement, and that Dr. Malone, Mr. Bennett, Lions Gate, and Merger Sub aided and abetted such breaches of fiduciary duty. On December 10, 2016, the court granted the defendants’ unopposed motion to stay the action pending final resolution of the consolidated Delaware action. On October 7, 2016, a putative class action complaint was filed by a purported Lions Gate stockholder in the Supreme Court of the State of New York for the County of Nassau: Levy v. Malone, et al., Index No. 607759/2016. The complaint names as defendants Lions Gate and the members of its board of directors. The complaint alleges, among other things, that the members of the Lions Gate board of directors breached fiduciary duties owed to Lions Gate stockholders and/or aided and abetted breaches of fiduciary duties by others in connection with the proposed merger, and that Lions Gate and the members of its board of directors failed to disclose material information in the amended joint proxy statement/ prospectus on Form S-4/A filed on September 7, 2016 in connection with the proposed merger. On November 23, 2016, the parties entered into a stipulation of settlement resolving the action. On October 30, 2017, the court issued an order and judgment finally approving the settlement. Appraisal Between December 8, 2016 and March 16, 2017, five verified petitions for appraisal were filed by purported Starz stockholders in the Court of Chancery of the State of Delaware. These actions have been consolidated into In re Starz Appraisal, Consolidated C.A. No. 12968-VCG. Starz has answered the petitions, and the court has entered a scheduling order providing for a trial to commence in the second half of fiscal 2019. Starz intends to defend the action vigorously. Should the pending appraisal proceedings reach a verdict, stockholders that are determined to have validly perfected their appraisal rights will be entitled to a cash payment equal to the fair value of their shares, plus interest, as determined by the court. The amounts that the Company may be required to pay to stockholders in connection with the pending appraisal proceedings is uncertain at this time, but could be greater than the merger consideration to which such stockholders would have been entitled had they not demanded appraisal. As of June 30, 2018, the Company has not paid the merger consideration for the shares (i.e., approximately 22.5 million shares of Starz Series A common stock) that are subject to the above appraisal demand but has recorded a liability of $885.2 million that is included in current dissenting shareholders' liability on the unaudited condensed consolidated balance sheet for the estimated value of the merger consideration that would have been payable for such shares, plus interest accrued at the Federal Reserve discount rate plus 5%, compounded quarterly. The liability is classified as a current liability as of June 30, 2018 based on the timing of the scheduled trial set to commence in the second half of fiscal 2019.

Contingencies

From time to time, the Company is involved in certain claims and legal proceedings arising in the normal course of business. In addition, the matters discussed below under the captions Litigation and Appraisal have arisen in connection with the Starz merger.

The Company establishes an accrued liability for legal claims when the Company determines that a loss is both probable and the amount of the loss can be reasonably estimated. Once established, accruals are adjusted from time to time, as appropriate, in light of additional information. The amount of any loss ultimately incurred in relation to matters for which an accrual has been established may be higher or lower than the amounts accrued for such matters.

Due to the inherent difficulty of predicting the outcome of litigation and claims, the Company often cannot predict what the eventual outcome of the pending matters will be, what the timing of the ultimate resolution of these matters will be, or what the eventual loss, if any, related to each pending matter may be. Accordingly, at this time, the Company has determined a loss related to these matters in excess of accrued liabilities is reasonably possible, however a reasonable estimate of the possible loss or range of loss cannot be made at this time.

The Company believes a portion of the losses that may be recognized, if any, would ultimately be recovered from insurance proceeds.

Litigation

Between July 19, 2016 and August 30, 2016, seven putative class action complaints were filed by purported Starz stockholders in the Court of Chancery of the State of Delaware. These actions have been consolidated into In re Starz Stockholder Litigation, Consolidated C.A. No. 12584-VCG, and the plaintiffs in the consolidated action filed a verified consolidated class action complaint on August 16, 2016. On August 18, 2016, plaintiffs filed a motion for expedited proceedings. On September 22, 2016, the court denied the motion. The defendants filed answers to the verified consolidated class action complaint on January 24, 2017. On May 16, 2018, the plaintiffs filed a verified amended consolidated class action complaint. The amended complaint names as defendants former members of the board of directors of Starz Susan Lyne, Andrew Heller, Greg Maffei, Christopher Albrecht, Daniel E. Sanchez, and Charles Y. Tanabe. The amended complaint also names as defendants Dr. Malone and Lions Gate. The amended complaint alleges, among other things, that the members of the Starz board of directors breached fiduciary duties owed to Starz and the holders of Starz Series A common stock in connection with the merger and related transactions; that Dr. Malone was a controlling stockholder of Starz who breached fiduciary duties owed to other Starz stockholders in connection with the merger and related transactions; and that Lions Gate aided and abetted such breaches of fiduciary duty. On June 18, 2018, the defendants (except Mr. Heller and Ms. Lyne) filed answers to the amended complaint. On July 3, 2018, Mr. Heller and Ms. Lyne filed a motion seeking summary judgment on the claims against them. The court has entered a scheduling order providing for a trial to commence in the second half of fiscal 2019. Defendants intend to defend the action vigorously.

On August 9, 2016, a putative class action complaint was filed by a purported Starz stockholder in the District Court for the City and County of Denver, Colorado: Gross v. John C. Malone, et al., 2016-CV-32873. The complaint names as defendants the members of the board of directors of Starz, Dr. Malone and Robert Bennett, as well as Lions Gate and an affiliated entity. The complaint alleges, among other things, that the members of the Starz board of directors breached fiduciary duties owed to Starz and the holders of Starz Series A common stock in connection with the merger and the transactions contemplated by the merger agreement, and that Dr. Malone, Mr. Bennett, Lions Gate, and Merger Sub aided and abetted such breaches of fiduciary duty. On December 10, 2016, the court granted the defendants’ unopposed motion to stay the action pending final resolution of the consolidated Delaware action.

On October 7, 2016, a putative class action complaint was filed by a purported Lions Gate stockholder in the Supreme Court of the State of New York for the County of Nassau: Levy v. Malone, et al., Index No. 607759/2016. The complaint names as defendants Lions Gate and the members of its board of directors. The complaint alleges, among other things, that the members of the Lions Gate board of directors breached fiduciary duties owed to Lions Gate stockholders and/or aided and abetted breaches of fiduciary duties by others in connection with the proposed merger, and that Lions Gate and the members of its board of directors failed to disclose material information in the amended joint proxy statement/ prospectus on Form S-4/A filed on September 7, 2016 in connection with the proposed merger. On November 23, 2016, the parties entered into a stipulation of settlement resolving the action. On October 30, 2017, the court issued an order and judgment finally approving the settlement.

Appraisal

Between December 8, 2016 and March 16, 2017, five verified petitions for appraisal were filed by purported Starz stockholders in the Court of Chancery of the State of Delaware. These actions have been consolidated into In re Starz Appraisal, Consolidated C.A. No. 12968-VCG. Starz has answered the petitions, and the court has entered a scheduling order providing for a trial to commence in the second half of fiscal 2019. Starz intends to defend the action vigorously. Should the pending appraisal proceedings reach a verdict, stockholders that are determined to have validly perfected their appraisal rights will be entitled to a cash payment equal to the fair value of their shares, plus interest, as determined by the court. The amounts that the Company may be required to pay to stockholders in connection with the pending appraisal proceedings is uncertain at this time, but could be greater than the merger consideration to which such stockholders would have been entitled had they not demanded appraisal. As of June 30, 2018, the Company has not paid the merger consideration for the shares (i.e., approximately 22.5 million shares of Starz Series A common stock) that are subject to the above appraisal demand but has recorded a liability of $885.2 million that is included in current dissenting shareholders' liability on the unaudited condensed consolidated balance sheet for the estimated value of the merger consideration that would have been payable for such shares, plus interest accrued at the Federal Reserve discount rate plus 5%, compounded quarterly. The liability is classified as a current liability as of June 30, 2018 based on the timing of the scheduled trial set to commence in the second half of fiscal 2019.