Contingencies and Legal Proceedings	9 Months Ended
Contingencies and Legal Proceedings	Mar. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Contingencies and Legal Proceedings	Contingencies and Legal Proceedings Contingencies The Company's operations in Brazil are involved in various governmental assessments, principally related to claims for excise and income taxes. The Company does not believe that the ultimate resolution of these matters will materially impact the Company's consolidated results of operations, financial position or cash flows. Under customary local regulations, the Company's Brazilian subsidiaries may need to post cash or other collateral if a challenge to any administrative assessment proceeds to the Brazilian court system; however, the level of cash or collateral already pledged or potentially required to be pledged would not significantly impact the liquidity of Amcor. At March 31, 2020 and June 30, 2019, the Company has recorded an accrual of $12.5 million and $16.4 million, respectively, included in other non-current liabilities in the unaudited condensed consolidated balance sheet and has estimated a reasonably possible loss exposure in excess of the accrual of $19.1 million and $23.7 million, respectively. The change in the reasonably possible loss exposure is due to strengthening of the U.S. Dollar compared to the Brazilian Real. The litigation process is subject to many uncertainties and the outcome of individual matters cannot be accurately predicted. The Company's assessments are based on its knowledge and experience, but the ultimate outcome of any of these matters may differ from the Company's estimates. As of March 31, 2020, Amcor provided letters of credit of $35.7 million, judicial insurance of $0.9 million, and deposited cash of $10.6 million with the courts to continue to defend the cases. Legal Proceedings On April 18, 2019, prior to the closure of the Amcor and Bemis transaction, litigation funding firm, Burford Capital, notified Bemis on behalf of two shareholder funds (BCIM Strategic Value Master Fund LP and BCIM SV SMA I LLC) that the funds would not accept the fixed exchange ratio for Amcor shares and instead intended to file a case asking a Missouri state court to appraise the value of their Bemis shares and compensate them accordingly. On June 24, 2019, the Burford funds sent a formal written demand for payment of the fair value of the funds’ shares. On September 6, 2019, the Burford funds filed a Petition for Appraisal of Stock in the Missouri court. On November 4, 2019, Bemis filed an Answer to the Petition for Appraisal of Stock. The matter has entered into the discovery stage. As the Company is in the early stages of this proceeding, it is difficult to predict the potential outcome. Two lawsuits were brought by purported holders of Bemis stock against Bemis and Bemis directors and officers are pending in federal court in the U.S. District Court for the Southern District of New York, in which plaintiffs are seeking damages for alleged violations of the Securities Exchange Act of 1934 and U.S. Securities and Exchange Commission rules and regulations. Plaintiffs allege a failure to disclose adequately information in the proxy statement issued in connection with the Amcor-Bemis merger. The cases are: Dixon, et al. v. Bemis Company, Inc. et al. and Stein v. Bemis Company, Inc. et al., which were instituted on April 15, 2019 and April 17, 2019, respectively. On March 10, 2020 the federal court in the U.S. District Court for the Southern District of New York consolidated the two pending cases into a single class action. In addition, a purported holder of Bemis stock filed a putative derivative suit in the Cole County Circuit Court, Nineteenth Judicial District of Missouri, against Bemis directors and Amcor, alleging that the directors breached fiduciary duties in connection with the Amcor-Bemis merger and that Amcor aided and abetted breaches of fiduciary duty. The case is Scarantino, et al. v. Amcor Limited, et al., which was instituted on April 19, 2019. Amcor intends to defend the claims made in the pending actions. It is too early for Amcor to provide any reliable assessment of the likely quantum of any damages that may become payable if its defense is unsuccessful in whole or in part. Although it is not possible at present to establish a reliable assessment of damages, there can be no assurance that any damages that may be awarded will not be material to the results of operations or financial condition of Amcor.