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(Parenthetical) - $ / shares
3 Months Ended 6 Months Ended
Mar. 30, 2019
Mar. 31, 2018
Mar. 30, 2019
Mar. 31, 2018
Statement of Stockholders' Equity [Abstract]        
Dividends per share (in dollars per share) $ 0.30 $ 0.30 $ 0.60 $ 0.60