Share-based Payments (Narrative) (Details)			1 Months Ended	12 Months Ended
	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