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Long-Term Debt
9 Months Ended
Jun. 30, 2020
Debt Disclosure [Abstract]  
Long-term Debt LONG-TERM DEBTIn April 2020, the Company issued $500 of 1.8% notes due October 2027, $500 of 1.95% notes due October 2030 and $500 of 2.75% notes due October 2050.