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Stock-Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended				6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021	Jun. 30, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant (in shares)					12.3
Unrecognized stock-based compensation expense					$ 74.8
Unrecognized stock-based compensation, expected to be recognized, weighted average period					2 years 7 months 6 days
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for future issuance (in shares)					1.6
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding and exercisable options (in shares)					0.3
Weighted average exercise price (in dollars per share)					$ 77.15
Weighted average remaining contractual life					3 years
Weighted average fair value per share of options granted (in dollars per share)					$ 69.86
PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years	3 years	3 years	3 years
PSUs | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued (in shares)	0.1
PSUs, RSUs, RSAs and DSUs | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested at period end (in shares)					0.1

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