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Share-based Payments (Narrative) (Details) |  |  | 1 Months Ended | 12 Months Ended |  |
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Jun. 15, 2023 | Mar. 20, 2023 USD ($) shares | Jun. 30, 2022 | Dec. 31, 2024 USD ($) offering $ / shares shares | Dec. 31, 2023 USD ($) offering $ / shares shares | Dec. 31, 2022 USD ($) $ / shares | May 09, 2023 shares | May 08, 2023 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Share-based payment expense |  |  |  | $ 62,400,000 | $ 57,500,000 | $ 44,500,000 |  |
Maximum contribution |  |  |  | $ 25,000 |  |  |  |
Stock options |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Assumed in IAA acquisition (in shares) | shares |  |  |  |  | 187,727 |  |  |
Remaining shares authorized for grant (in shares) | shares |  |  |  | 7,958,801 | 8,511,523 |  |  |
Award vesting period |  |  |  | 3 years |  |  |  |
Award term |  |  |  | 10 years |  |  |  |
Weighted average grant date fair value of options granted (usd per share) | $ / shares |  |  |  |  | $ 17.63 | $ 14.35 |  |
Unrecognized share based continuing employment costs |  |  |  | $ 900,000 |  |  |  |
Unrecognized compensation costs, period for recognition |  |  |  | 10 months 24 days |  |  |  |
Proceeds from exercise of employee stock options |  |  |  | $ 49,300,000 | $ 34,500,000 | $ 5,900,000 |  |
Actual tax benefit realized from option exercise |  |  |  | 2,300,000 | $ 800,000 | $ 400,000 |  |
Premium-priced stock options |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Assumed in IAA acquisition (in shares) | shares |  |  |  |  | 0 |  |  |
Unrecognized share based continuing employment costs |  |  |  | 0 |  |  |  |
Weighted average estimated grant date fair value (usd per share) | $ / shares |  |  |  |  |  | $ 8.00 |  |
Performance Share Units With Market Conditions |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Unrecognized share based continuing employment costs |  |  |  | $ 17,100,000 |  |  |  |
Unrecognized compensation costs, period for recognition |  |  |  | 2 years 25 days |  |  |  |
Performance period |  |  | 2 years | 3 years |  |  |  |
Restricted Stock Units (RSUs) |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Award vesting period |  |  |  | 3 years |  |  |  |
Unrecognized share based continuing employment costs |  |  |  | $ 16,500,000 |  |  |  |
Unrecognized compensation costs, period for recognition |  |  |  | 1 year 4 months 17 days |  |  |  |
Deferred Share Units |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Unrecognized share based continuing employment costs |  |  |  | $ 0 |  |  |  |
Share unit liability |  |  |  | $ 8,400,000 | $ 7,600,000 |  |  |
Employee Share Purchase Plan |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Purchase of shares in company | 85.00% |  |  |  |  |  |  |
Number of ESPP offerings | offering |  |  |  | 2 | 2 |  |  |
Employee Share Purchase Plan | Offering Period One |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Fair value, grant date (usd per share) | $ / shares |  |  |  | $ 15.94 | $ 11.99 |  |  |
Employee Share Purchase Plan | Offering Period Two |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Fair value, grant date (usd per share) | $ / shares |  |  |  | $ 19.42 | $ 12.43 |  |  |
2023 Share Incentive Plan |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Remaining shares authorized for grant (in shares) | shares |  |  |  |  |  |  |  | 9,355,000
Senior Executive PSU Plan | Performance Shares |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Unrecognized share based continuing employment costs |  |  |  | $ 12,000,000.0 |  |  |  |
Unrecognized compensation costs, period for recognition |  |  |  | 1 year 11 months 1 day |  |  |  |
PSU |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Market value of shares vested and released |  |  |  | $ 3,200,000 | $ 1,800,000 | $ 4,900,000 |  |
2023 ESPP |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Remaining shares authorized for grant (in shares) | shares |  |  |  | 2,306,355 | 2,819,497 |  | 3,000,000 |
2023 ESPP | Employee Share Purchase Plan |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Market price discount | 15.00% |  |  |  |  |  |  |
IAA |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Assumed in IAA acquisition (in shares) | shares |  | 187,727 |  |  |  |  |  |
Number of RSUs assumed in acquisition (in shares) | shares |  | 366,379 |  |  |  |  |  |
Estimated aggregate fair value of converted share-based awards |  | $ 24,900,000 |  |  |  |  |  |
Share-based payment expense |  | $ 4,800,000 |  |  |  |  |  |
IAA | Stock options |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Weighted average share price of options assumed (usd per share) | $ / shares |  |  |  | $ 15.52 |  |  |  |

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- Definition Intrinsic value of outstanding award under share-based payment arrangement. Excludes share and unit options. + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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