Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Numerator:
Net Income (Loss) Attributable to Parent	$ 1,647.8	$ 1,115.5	$ 4,225.7	$ 2,836.8
Denominator:
Denominator for basic earnings per share — weighted average common shares	350.8	359.7	353.3	362.2
Effect of dilutive securities:
Employee stock awards (shares)	2.3	4.3	3.2	4.9
Denominator for diluted earnings per share — adjusted weighted average common shares	353.1	364.0	356.5	367.1
Basic net income per common share attributable to Parent (in dollars per share)	$ 4.70	$ 3.10	$ 11.96	$ 7.83
Diluted net income per common share attributable to Parent (in dollars per share)	$ 4.67	$ 3.06	$ 11.85	$ 7.73