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Condensed Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares
3 Months Ended 9 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Statement Of Stockholders Equity [Abstract]        
Cash dividends per share $ 0.1900 $ 0.1625 $ 0.5425 $ 0.4063