Earnings per share - Basic and Diluted Income Per Common Share Computation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Numerator
Net income	$ 150,049	$ 118,095
Denominator
Basic (in shares)	118,144	123,215
Dilutive potential common stock outstanding
Weighted average common shares outstanding for diluted earnings per share (in shares)	122,875	126,644
Earnings per share
Basic (usd per share)	$ 1.27	$ 0.96
Diluted (usd per share)	$ 1.22	$ 0.93
Convertible Notes
Dilutive potential common stock outstanding
Dilutive potential common stock outstanding (in shares)	1,723	458
Stock options
Dilutive potential common stock outstanding
Dilutive potential common stock outstanding (in shares)	1,934	2,071
RSUs, PSUs and ESPP
Dilutive potential common stock outstanding
Dilutive potential common stock outstanding (in shares)	1,074	900

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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