Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Numerator:
Net Income (Loss) Attributable to Parent	$ 1,335.1	$ 1,647.8	$ 3,236.0	$ 4,225.7
Denominator:
Denominator for basic earnings per share — weighted average common shares	339.9	350.8	342.1	353.3
Effect of dilutive securities:
Employee stock awards (shares)	2.4	2.3	2.6	3.2
Denominator for diluted earnings per share — adjusted weighted average common shares	342.3	353.1	344.7	356.5
Basic net income per common share attributable to Parent (in dollars per share)	$ 3.93	$ 4.70	$ 9.46	$ 11.96
Diluted net income per common share attributable to Parent (in dollars per share)	$ 3.90	$ 4.67	$ 9.39	$ 11.85