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Stockholders' Equity (Changes in Non-vested Stock Options) (Details) - Stock Options [Member] shares in Thousands | 3 Months Ended
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Dec. 31, 2023 $ / shares shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Number of Options, Beginning balance | shares | 1,393
Granted, Number of options | shares | 6
Exercised, Number of options | shares | shares | (572)
Forfeited, Number of options | shares | (1)
Number of Options, Ending balance | shares | 826
Weighted-Average Grant Date Fair Value Per Share, Beginning balance | $ / shares | $ 33.96
Granted, Weighted-Average Grant Date Fair Value Per Share | $ / shares | 61.03
Exercised, Weighted-Average Grant Date Fair Value Per Share | $ / shares | 32.37
Forfeited, Weighted-Average Grant Date Fair Value Per Share | $ / shares | 34.42
Weighted-Average Grant Date Fair Value Per Share, Ending balance | $ / shares | $ 35.26

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- Definition Line items represent financial concepts included in a table. 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