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Condensed Consolidated Balance Sheets (Parenthetical) - shares
Dec. 31, 2019
Jun. 30, 2019
Statement of Financial Position [Abstract]    
Preferred shares, authorized 500,000 500,000
Preferred shares, issued 0 0
Common shares, authorized 755,000,000 755,000,000
Common shares, issued 327,000,000 327,000,000
Common shares in treasury 35,000,000 28,000,000