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Share-Based Incentive Plan (Narrative) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023	Nov. 16, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	51,482
Stock option award expiration period, in years	10 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	3,434,489		4,159,333
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested	$ 0.5
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value	0.3
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Expected to Vest, Outstanding, Aggregate Intrinsic Value	0.4
Long-Term Incentive Plan 2003
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation expense, net of estimated forfeitures	$ 199.2
Weighted-average period over which total unrecognized compensation expense expected to be recognized, in years	1 year 6 months
Intrinsic value of stock-based awards exercised and restricted stock units converted	$ 141.5	$ 109.5
Long-Term Incentive Plan 2003 \| Stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Average remaining contractual term for stock awards outstanding, in years	3 years 4 months 24 days
Average remaining contractual term for stock awards vested and expected to vest, in years	3 years 3 months 18 days
Average remaining contractual term for stock awards exercisable, in years	3 years 3 months 18 days
Long-Term Incentive Plan 2003 \| Stock awards \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option award vesting period, in years	3 years
Long-Term Incentive Plan 2003 \| Stock awards \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option award vesting period, in years	4 years
2020 Stock Incentive Plan and 2003 Long-Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Ordinary shares reserved for issuance				72,500,000