v3.26.1
Earnings Per Share Computations - Schedule of Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Net income attributable to Amcor plc $ 1,106 $ 511 $ 730
Distributed and undistributed earnings attributable to shares to be repurchased 0 (1) (3)
Net income available to ordinary shareholders of Amcor plc—basic and diluted $ 1,106 $ 510 $ 727
Weighted-average ordinary shares outstanding (in shares) 463.3 318.4 289.0
Weighted-average ordinary shares to be repurchased by Amcor plc (in shares) (0.1) (0.5) (1.2)
Effect of dilutive shares (in shares) 0.6 0.7 0.3
Weighted-average ordinary shares outstanding for EPS—diluted (in shares) 463.8 318.6 288.1
Basic earnings per ordinary share $ 2.39 $ 1.60 $ 2.53
Diluted earnings per ordinary share $ 2.38 $ 1.60 $ 2.52
Weighted-average ordinary shares outstanding 1.7 0.3  
Excluding forward contracts to purchase own shares      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Weighted Average Number of Shares Outstanding (in shares) 463.2 317.9 287.8