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v3.25.2

Restricted Stock, Performance Share and Cash Awards (Detail) $ in Millions |  |  |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Mar. 01, 2025 USD ($) shares | Mar. 01, 2024 USD ($) shares | Mar. 15, 2023 | Jun. 30, 2025 USD ($) shares | Mar. 31, 2025 USD ($) shares | Jun. 30, 2024 USD ($) shares | Mar. 31, 2024 USD ($) shares | Jun. 30, 2025 USD ($) TIME shares | Jun. 30, 2024 USD ($) shares | Mar. 15, 2022 USD ($) shares
Common Stock Options Restricted Stock Warrants And Changes In Capitalization [Line Items] |  |  |  |  |  |  |  |  |  |
Vesting period, years | 3 years |  |  |  |  |  |  |  |  |
Cash-based compensation awards, expenses |  |  |  | $ 0.0 |  |  |  | $ 0.0 |  |
Restricted Stock Units (RSUs) |  |  |  |  |  |  |  |  |  |
Common Stock Options Restricted Stock Warrants And Changes In Capitalization [Line Items] |  |  |  |  |  |  |  |  |  |
Restricted stock or unit expense |  |  |  | 16.1 |  | $ 14.1 |  | 29.3 | $ 27.0 |
Unvested Restricted Stock |  |  |  |  |  |  |  |  |  |
Common Stock Options Restricted Stock Warrants And Changes In Capitalization [Line Items] |  |  |  |  |  |  |  |  |  |
Total intrinsic value |  |  |  | 593.0 |  | 512.7 |  | 593.0 | 512.7 |
Equity awards with an aggregate fair value |  |  |  |  |  |  |  | 112.3 | 93.3 |
Performance Shares |  |  |  |  |  |  |  |  |  |
Common Stock Options Restricted Stock Warrants And Changes In Capitalization [Line Items] |  |  |  |  |  |  |  |  |  |
Restricted stock or unit expense |  |  |  | 6.3 |  | 5.6 |  | 12.6 | 10.6 |
Total intrinsic value |  |  |  | $ 103.9 |  | 85.2 |  | 103.9 | 85.2 |
Equity awards with an aggregate fair value |  |  |  |  |  |  |  | $ 35.5 | $ 31.6 |
Performance share awards approved, Fair value | $ 21.8 | $ 14.2 |  |  |  |  |  |  |  |
Vesting period, years | 3 years | 3 years | 3 years |  |  |  |  |  |  |
Cash Awards |  |  |  |  |  |  |  |  |  |
Common Stock Options Restricted Stock Warrants And Changes In Capitalization [Line Items] |  |  |  |  |  |  |  |  |  |
Shares granted in the period (in shares) | shares |  |  |  |  |  |  |  | 0 | 0 |
Cash-based compensation awards, expenses |  |  |  |  |  | $ 3.3 |  |  | $ 6.7 |
Cash Awards | Officer and Key Employees |  |  |  |  |  |  |  |  |  |
Common Stock Options Restricted Stock Warrants And Changes In Capitalization [Line Items] |  |  |  |  |  |  |  |  |  |
Vesting period, years |  |  |  |  |  |  |  | 3 years |  |
Performance awards period, years |  |  |  |  |  |  |  | 1 year |  |
Ultimate award value, multiples of original value of the units, minimum | TIME |  |  |  |  |  |  |  | 0.5 |  |
Ultimate award value, multiples of original value of the units, maximum | TIME |  |  |  |  |  |  |  | 1.5 |  |
Provisional compensation cash awards approved for future grant by compensation committee, value |  |  |  |  |  |  |  |  |  | $ 19.9
Provisional compensation cash award approved for future grant by compensation committee(in units) | shares |  |  |  |  |  |  |  |  |  | 125,000
2022 Provisional Cash Awards |  |  |  |  |  |  |  |  |  |
Common Stock Options Restricted Stock Warrants And Changes In Capitalization [Line Items] |  |  |  |  |  |  |  |  |  |
Provisional compensation cash award approved for future grant by compensation committee(in units) | shares |  |  |  | 111,000 |  |  |  | 111,000 |  |
Cash award with aggregate fair value vested and distributed to participants |  |  |  |  |  |  |  | $ 26.5 |  |
2021 Provisional Cash Awards |  |  |  |  |  |  |  |  |  |
Common Stock Options Restricted Stock Warrants And Changes In Capitalization [Line Items] |  |  |  |  |  |  |  |  |  |
Provisional compensation cash award approved for future grant by compensation committee(in units) | shares |  |  |  |  |  | 129,000 |  |  | 129,000 |
Cash award with aggregate fair value vested and distributed to participants |  |  |  |  |  |  |  |  | $ 25.4 |
Long Term Incentive Plan | Executive Officer | Minimum |  |  |  |  |  |  |  |  |  |
Common Stock Options Restricted Stock Warrants And Changes In Capitalization [Line Items] |  |  |  |  |  |  |  |  |  |
Minimum age of employee with not subject to award forfeiture on condition compliance |  |  |  | 62 years |  |  |  |  |  |
Long Term Incentive Plan | Restricted Stock Restricted Stock Units And Performance Unit Awards |  |  |  |  |  |  |  |  |  |
Common Stock Options Restricted Stock Warrants And Changes In Capitalization [Line Items] |  |  |  |  |  |  |  |  |  |
Shares authorized (in shares) | shares |  |  |  | 4,000,000.0 |  |  |  | 4,000,000.0 |  |
Long Term Incentive Plan | Restricted Stock Units (RSUs) |  |  |  |  |  |  |  |  |  |
Common Stock Options Restricted Stock Warrants And Changes In Capitalization [Line Items] |  |  |  |  |  |  |  |  |  |
Shares granted in the period (in shares) | shares |  |  |  |  | 297,000 |  | 345,000 |  |  |
Fair value of grants in period |  |  |  |  | $ 94.3 |  | $ 83.9 |  |  |
Long Term Incentive Plan | Performance Shares |  |  |  |  |  |  |  |  |  |
Common Stock Options Restricted Stock Warrants And Changes In Capitalization [Line Items] |  |  |  |  |  |  |  |  |  |
Shares authorized (in shares) | shares | 68,000 | 58,000 |  |  |  |  |  |  |  |
Share-based compensation arrangement, conversion ratio to common stock | 1 | 1 |  |  |  |  |  |  |  |
Long Term Incentive Plan | Performance Shares | Executive Officer | Minimum |  |  |  |  |  |  |  |  |  |
Common Stock Options Restricted Stock Warrants And Changes In Capitalization [Line Items] |  |  |  |  |  |  |  |  |  |
Minimum age of employee with not subject to award forfeiture on condition compliance |  | 62 years | 55 years |  |  |  |  |  |  |
Period of service from grant date stock options awarded not subject to forfeiture |  |  | 2 years |  |  |  |  |  |  |
Long Term Incentive Plan | Cash Awards |  |  |  |  |  |  |  |  |  |
Common Stock Options Restricted Stock Warrants And Changes In Capitalization [Line Items] |  |  |  |  |  |  |  |  |  |
Share-based compensation arrangement, conversion ratio to common stock | 1 |  |  |  |  |  |  |  |  |

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