Stockholders' Equity (Summary of Activity for Stock Option Awards) (Details) - Stock Options [Member] - $ / shares shares in Thousands	3 Months Ended	9 Months Ended
Jun. 30, 2026	Jun. 30, 2026
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of options, Beginning balance	1,671	2,249
Granted, Number of options	0	17
Exercised, Number of options	(154)	(748)
Forfeited, Number of options	(2)	(3)
Number of options, Ending balance	1,515	1,515
Weighted Average Exercise Price Per Share, Beginning balance	$ 97.33	$ 91.25
Granted, Weighted Average Exercise Price Per Share	0	391.53
Exercised, Weighted Average Exercise Price Per Share	94.58	85.11
Forfeited, Weighted Average Exercise Price Per Share	153.18	141.26
Weighted Average Exercise Price Per Share, Ending balance	$ 97.53	$ 97.53

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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