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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parenthetical) - $ / shares
3 Months Ended
Sep. 30, 2020
Jun. 30, 2020
Jun. 30, 2019
Statement of Stockholders' Equity [Abstract]      
Cash dividends declared (in dollars per share) $ 0.23 $ 0.23 $ 0.23
Common stock purchased by directors' deferred compensation plan, net shares (in shares) 4,200 8,800 14,600