Stockholders' Equity (Summary of Activity for PSUs) (Details) - Performance Restricted Stock Units [Member] shares in Thousands	12 Months Ended
	Sep. 30, 2024 $ / shares shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Granted, Number of units | shares	66
Forfeited, Number of units | shares	(4)
Number of units, Ending balance | shares	62
Granted, Weighted-Average Grant Date Fair Value | $ / shares	$ 146.47
Forfeited, Weighted-Average Grant Date Fair Value | $ / shares	146.47
Weighted-Average Grant Date Fair Value, Ending balance | $ / shares	$ 146.47