Share-Based Compensation - Summary of RSUs Activity (Details) - Restricted stock units $ / shares in Units, shares in Thousands, $ in Thousands	9 Months Ended
	Sep. 30, 2020 USD ($) $ / shares shares
Number of RSUs Outstanding (in thousands)
Number of RSUs Outstanding, Beginning Balance (in shares) | shares	3,249
Number of RSUs Outstanding, Granted (in shares) | shares	1,253
Number of RSUs Outstanding, Released (in shares) | shares	(1,397)
Number of RSUs Outstanding, Canceled/Forfeited (in shares) | shares	(198)
Number of RSUs Outstanding, Ending Balance (in shares) | shares	2,907
Weighted- Average Grant Date Fair Value Per Share
Weighted-Average Grant Date Fair Value Per Share, Beginning Balance (in dollars per share) | $ / shares	$ 85.39
Weighted-Average Grant Date Fair Value Per Share, Granted (in dollars per share) | $ / shares	217.88
Weighted-Average Grant Date Fair Value Per Share, Released (in dollars per share) | $ / shares	95.97
Weighted-Average Grant Date Fair Value Per Share, Canceled/Forfeited (in dollars per share) | $ / shares	107.71
Weighted-Average Grant Date Fair Value Per Share, Ending Balance (in dollars per share) | $ / shares	$ 135.88
Aggregate Intrinsic Value (in thousands)
Aggregate Intrinsic Value, Beginning Balance (amount) | $	$ 548,145
Aggregate Intrinsic Value, Outstanding, Ending Balance (amount) | $	$ 798,357