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v3.22.2.2

Stockholders' Equity (Narrative) (Details) - USD ($) |  | 1 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Jan. 29, 2020 | Nov. 30, 2019 | Sep. 30, 2022 | Jan. 22, 2022 | Sep. 30, 2021 | Sep. 30, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |
Total unrecognized compensation cost related to non-vested stock-based compensation arrangements |  |  | $ 16,261,000 |  |  |
Forfeiture rate, Board of Directors |  |  | 0.00% |  |  |
Forfeiture rate, non-Board of Directors |  |  | 7.30% |  |  |
Unrecognized compensation cost is expected to be recognized over a weighted-average period |  |  | 1 year 9 months 18 days |  |  |
Chief Executive Officer [Member] |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |
Vesting period, in years |  |  | 4 years |  |  |
2017 Plan [Member] |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |
Number of additional shares available for future grants | 1,000,000 |  |  |  |  |
RSU [Member] |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |
Shares issued |  |  | 54,000 |  |  |
Weighted-average exercise price |  |  | $ 99.15 |  |  |
RSU [Member] | Chief Executive Officer [Member] |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |
Number shares grant, value |  |  | $ 3,400,000 |  |  |
Non Qualified stock Option [Member] | Chief Executive Officer [Member] |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |
Number shares grant, value |  |  | $ 2,200,000 |  |  |
Stock Options [Member] |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |
Vesting period, in years |  |  | 4 years |  |  |
Vested contractual term, in years |  |  | 10 years |  |  |
Exercise prices of stock options outstanding |  |  | $ 74.40 |  | $ 68.21 |
Weighted-average exercise price |  |  | $ 115.30 |  |  |
Stock Options [Member] | ShareBasedC ompensation Award Tranche One [Member] |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |
Vesting rate |  |  | 25.00% |  |  |
2017 Authorization [Member] | 2017 Plan [Member] |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |
Number of shares available for future grants |  |  | 2,938,000 |  |  |
2019 Authorization [Member] |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |
Stock repurchase program authorized amount |  |  | $ 26,742,000 |  | $ 45,860,000 | $ 13,346,000
Repurchase period in years |  | 3 years |  |  |  |
Stock repurchase program, number of shares authorized to be repurchased |  |  | 233,000 |  | 404,000 | 124,000
Stock repurchase program, number of shares authorized to be repurchased in-transit |  |  |  |  | 110,000 |
Stock repurchase program authorized in-transit amount |  |  |  |  | $ 12,516,000 |
2022 Authorization [Member] |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |
Stock repurchase program authorized amount |  |  | $ 446,042,000 |  |  |
Stock repurchase program, number of shares authorized to be repurchased |  |  | 3,890,000 |  |  |
Maximum [Member] |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |
Exercise prices of stock options outstanding |  |  | $ 104.77 |  |  |
Maximum [Member] | 2019 Authorization [Member] |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |
Stock repurchase program authorized amount |  | $ 500,000,000 |  |  |  |
Maximum [Member] | 2022 Authorization [Member] |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |
Stock repurchase program authorized amount |  |  |  | $ 800,000,000 |  |
Minimum [Member] |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |
Exercise prices of stock options outstanding |  |  | $ 33.64 |  |  |

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