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CONDENSED CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares
3 Months Ended 9 Months Ended
Jun. 06, 2018
Mar. 07, 2018
Dec. 05, 2017
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
CONDENSED CONSOLIDATED STATEMENT OF SHAREHOLDERS’ EQUITY              
Dividends declared (in dollars per share) $ 0.71 $ 0.70 $ 0.70 $ 0.71 $ 0.70 $ 2.11 $ 2.10