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Debt - Narrative (Details) - USD ($)	1 Months Ended		12 Months Ended
	Jan. 31, 2021	Sep. 30, 2018	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2023	May 31, 2023	Apr. 30, 2023
Debt Conversion [Line Items]
Repayments of convertible senior notes			$ 0	$ 726,979,000	$ 16,000
Convertible Senior Notes Due 2023 | Capped Calls
Debt Conversion [Line Items]
Initial cap price (in usd per share)			$ 110.00	$ 110.00	$ 110.00
Convertible Senior Notes Due 2023 | Convertible Debt
Debt Conversion [Line Items]
Principal on face amount of debt		$ 575,000,000.0
Debt interest rate percentage		0.50%
Additional principal amount purchased		$ 75,000,000.0
Proceeds from issuance of convertible senior notes, net of initial purchasers' discounts and transaction costs		$ 560,800,000
Repayments of convertible senior notes				$ 37,100,000
Debt instrument, effective interest rate			5.90%
Convertible Senior Notes Due 2023 | Convertible Debt | Capped Calls
Debt Conversion [Line Items]
Settlement of capped calls, net of related costs							$ 23,700,000
Convertible Senior Notes Due 2024 | Capped Calls
Debt Conversion [Line Items]
Initial cap price (in usd per share)			$ 525.30	$ 525.30	$ 525.30
Convertible Senior Notes Due 2024 | Convertible Debt
Debt Conversion [Line Items]
Principal on face amount of debt	$ 690,000,000.0
Debt interest rate percentage	0.00%
Additional principal amount purchased	$ 90,000,000.0
Proceeds from issuance of convertible senior notes, net of initial purchasers' discounts and transaction costs	$ 677,300,000
Repayments of convertible senior notes				$ 689,900,000
Debt instrument, effective interest rate			3.80%
Credit Facility | Revolving Credit Facility
Debt Conversion [Line Items]
Line of credit, maximum borrowing capacity						$ 500,000,000.0
Line of credit, additional borrowing amount						$ 250,000,000.0
Carrying value of debt			$ 0
Credit Facility | Revolving Credit Facility | Minimum
Debt Conversion [Line Items]
Line of credit, commitment fee percentage on undrawn balance			0.25%
Credit Facility | Revolving Credit Facility | Maximum
Debt Conversion [Line Items]
Line of credit, commitment fee percentage on undrawn balance			0.30%

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