Earnings per share - Computation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Numerator
Net income	$ 137,011	$ 81,837	$ 307,079	$ 196,206
Denominator
Weighted average common shares outstanding for basic earnings per share (in shares)	126,850	131,965	126,969	132,896
Dilutive potential common stock outstanding
Weighted average common shares outstanding for diluted earnings per share (in shares)	130,134	134,083	129,526	135,233
Earnings per share
Basic (usd per share)	$ 1.08	$ 0.62	$ 2.42	$ 1.48
Diluted (usd per share)	$ 1.05	$ 0.61	$ 2.37	$ 1.45
Convertible Notes
Dilutive potential common stock outstanding
Dilutive potential common stock outstanding (in shares)	293	0	98	77
Stock options
Dilutive potential common stock outstanding
Dilutive potential common stock outstanding (in shares)	2,174	1,830	1,844	1,882
RSUs, PSUs and ESPP
Dilutive potential common stock outstanding
Dilutive potential common stock outstanding (in shares)	817	288	615	378

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