Stock-Based Compensation - Schedule of Changes in Incentive Awards Outstanding (Details) - Incentive Shares Member shares in Thousands	12 Months Ended
	Sep. 30, 2023 $ / shares shares
Shares
Beginning of year (in shares) | shares	5,280
Granted (in shares) | shares	1,263
Earned/vested (in shares) | shares	(1,814)
Canceled (in shares) | shares	(292)
End of year (in shares) | shares	4,437
Average Grant Date Fair Value Per Share
Beginning of year (in dollars per share) | $ / shares	$ 77.58
Granted (in dollars per share) | $ / shares	87.33
Earned/vested (in dollars per share) | $ / shares	71.70
Canceled (in dollars per share) | $ / shares	89.49
End of year (in dollars per share) | $ / shares	$ 82.02