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v3.20.2

Equity - Narrative (Details) - USD ($) $ / shares in Units, shares in Millions | 2 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Nov. 19, 2020 | Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2018 | Mar. 31, 2020
Stock-based compensation |  |  |  |  |
Shares available for grants (in shares) |  | 0.5 |  |  |
Total income tax benefit recognized |  | $ 8,000,000.0 | $ 9,900,000 | $ 8,700,000 |
Liability related to forfeitures for tax payments |  | $ 9,818,000 | $ 10,614,000 | $ 8,733,000 |
Stock repurchase programs, authorized amount |  |  |  |  | $ 200,000,000
Common shares repurchased (in shares) |  | 2.8 | 0.7 | 1.1 |
Common shares repurchased, cost |  | $ 166,959,000 | $ 46,797,000 | $ 67,572,000 |
Amount remaining available for future stock repurchases |  | $ 150,000,000.0 |  |  |
RSUs awarded in 2009 and after | Share-based Payment Arrangement, Tranche One |  |  |  |  |
Stock-based compensation |  |  |  |  |
Award vesting period (in years) |  | 1 year |  |  |
RSUs awarded in 2009 and after | Share-based Payment Arrangement, Tranche Two |  |  |  |  |
Stock-based compensation |  |  |  |  |
Award vesting period (in years) |  | 4 years |  |  |
RSUs awarded in 2009 and after | Share-based Payment Arrangement, Tranche Three |  |  |  |  |
Stock-based compensation |  |  |  |  |
Award vesting period (in years) |  | 5 years |  |  |
Restricted stock units (RSU) |  |  |  |  |
Stock-based compensation |  |  |  |  |
Share-based compensation expense |  | $ 23,700,000 | $ 20,800,000 | $ 20,200,000 |
Deferred vested award (in shares) |  | 0.6 |  |  |
Granted (in dollars per share) |  | $ 74.26 | $ 66.96 | $ 64.33 |
Total fair value |  | $ 23,600,000 | $ 27,400,000 | $ 30,300,000 |
Unrecognized compensation cost |  | $ 41,700,000 |  |  |
Unrecognized compensation costs, period for recognition |  | 4 years |  |  |
Weighted average life (in years) |  | 1 year 6 months |  |  |
Stock options |  |  |  |  |
Stock-based compensation |  |  |  |  |
Liability related to forfeitures for tax payments |  | $ 9,800,000 | $ 10,600,000 | $ 8,700,000 |
Subsequent events |  |  |  |  |
Stock-based compensation |  |  |  |  |
Common shares repurchased (in shares) | 0.1 |  |  |  |
Common shares repurchased, cost | $ 3,400,000 |  |  |  |

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