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Earnings Per Share Computations
9 Months Ended
Mar. 31, 2023
Earnings Per Share [Abstract]  
Earnings Per Share Computations Earnings Per Share Computations
    The Company applies the two-class method when computing its earnings per share ("EPS"), which requires that net income per share for each class of share be calculated assuming all of the Company's net income is distributed as dividends to each class of share based on their contractual rights.

    Basic EPS is computed by dividing net income available to ordinary shareholders by the weighted-average number of ordinary shares outstanding after excluding the ordinary shares to be repurchased using forward contracts. Diluted EPS includes the effects of share options, restricted shares, performance rights, performance shares, and share rights, if dilutive.

 Three Months Ended March 31, Nine Months Ended March 31,
(in millions, except per share amounts)2023202220232022
Numerator  
Net income attributable to Amcor plc$177 $269 $868 $696 
Distributed and undistributed earnings attributable to shares to be repurchased(1)(1)(6)(2)
Net income available to ordinary shareholders of Amcor plc—basic and diluted$176 $268 $862 $694 
Denominator
Weighted-average ordinary shares outstanding1,480 1,506 1,484 1,521 
Weighted-average ordinary shares to be repurchased by Amcor plc(10)(3)(11)(4)
Weighted-average ordinary shares outstanding for EPS—basic1,470 1,503 1,473 1,517 
Effect of dilutive shares
Weighted-average ordinary shares outstanding for EPS—diluted1,476 1,507 1,482 1,521 
Per ordinary share income
Basic earnings per ordinary share$0.120 $0.178 $0.585 $0.457 
Diluted earnings per ordinary share$0.119 $0.178 $0.581 $0.456 
Note: Per share amounts are computed independently for each of the quarters presented. The sum of the quarters may not equal the total year amount due to the impact of changes in average quarterly shares outstanding and all other quarterly amounts may not equal the total year due to rounding.

    Certain outstanding share options were excluded from the diluted earnings per share calculation because they were anti-dilutive. The excluded share options for the three and nine months ended March 31, 2023 represented an aggregate of 15 million and 13 million shares, respectively. The excluded share options for the three and nine months ended March 31, 2022 represented an aggregate of 9 million and 6 million shares, respectively.