Debt (Details)		1 Months Ended	3 Months Ended		9 Months Ended
	Feb. 18, 2025 USD ($)	May 31, 2025 USD ($) d $ / shares	Sep. 30, 2025 USD ($)	Jun. 30, 2025 USD ($)	Sep. 30, 2025 USD ($) $ / shares	Sep. 30, 2024 USD ($)
Line of Credit Facility [Line Items]
Outstanding principal amount		$ 75,000,000.0
Amortization of debt discount and issuance costs					$ 2,790,000	$ 0
Capped calls				$ 35,520,000
Purchases of capped calls related to convertible senior notes					47,800,000	$ 0
Deferred tax impact					$ 12,300,000
Initial strike price (in usd per share) | $ / shares					$ 70.67
Initial cap price (in usd per share) | $ / shares					$ 89.95
Additional Paid-In Capital
Line of Credit Facility [Line Items]
Capped calls				$ 35,520,000	$ 35,500,000
Convertible Senior Notes Due 2030 | Convertible notes
Line of Credit Facility [Line Items]
Debt instrument, face amount		$ 1,000,000,000.0	$ 1,000,000,000.0		1,000,000,000.0
Interest rate		0.00%
Proceeds from convertible debt		$ 968,700,000
Conversion ratio		0.0141493
Conversion price (in usd per share) | $ / shares		$ 70.67
Conditional percentage		0.0050
Amortization of debt discount and issuance costs			$ 1,600,000		$ 2,400,000
Effective interest rate			0.64%		0.64%
Contractual interest expense payment			$ 0		$ 0
Debt instrument, fair value			1,120,000,000		1,120,000,000
Debt outstanding			1,000,000,000		1,000,000,000
Convertible Senior Notes Due 2030 | Convertible notes | 0-180 Days
Line of Credit Facility [Line Items]
Special interest		0.0025
Convertible Senior Notes Due 2030 | Convertible notes | 180-365 Days
Line of Credit Facility [Line Items]
Special interest		0.0050
Convertible Senior Notes Due 2030 | Convertible notes | Debt Conversion Terms One
Line of Credit Facility [Line Items]
Threshold percentage		130.00%
Threshold trading days | d		20
Threshold consecutive trading days | d		30
Convertible Senior Notes Due 2030 | Convertible notes | Debt Conversion Terms Two
Line of Credit Facility [Line Items]
Threshold percentage		98.00%
Threshold trading days | d		5
Threshold consecutive trading days | d		10
Convertible Senior Notes Due 2030 | Convertible notes | Maximum
Line of Credit Facility [Line Items]
Maximum additional interest		0.0100
Revolving Credit Facility | The Credit Facility | Line of Credit
Line of Credit Facility [Line Items]
Debt instrument, term	3 years
Line of credit facility, maximum borrowing capacity	$ 175,000,000
Accordion increase amount	$ 125,000,000
Fronting fee percentage	0.00125
Leverage ratio	3.50
Interest coverage ratio	3.00
Revolving Credit Facility | The Credit Facility | Line of Credit | Minimum
Line of Credit Facility [Line Items]
Interest rate	1.50%
Revolving Credit Facility | The Credit Facility | Line of Credit | Maximum
Line of Credit Facility [Line Items]
Interest rate	2.00%
Revolving Credit Facility | The Credit Facility | Line of Credit | Base Rate
Line of Credit Facility [Line Items]
Interest rate	0.10%
Revolving Credit Facility | The Credit Facility | Line of Credit | Secured Overnight Financing Rate (SOFR) | Minimum
Line of Credit Facility [Line Items]
Commitment fee percentage	0.20%
Revolving Credit Facility | The Credit Facility | Line of Credit | Secured Overnight Financing Rate (SOFR) | Maximum
Line of Credit Facility [Line Items]
Commitment fee percentage	0.30%
Revolving Credit Facility | The Credit Facility | Line of Credit | Secured Overnight Financing Rate (SOFR) | Variable Rate Component One | Minimum
Line of Credit Facility [Line Items]
Interest rate	1.50%
Revolving Credit Facility | The Credit Facility | Line of Credit | Secured Overnight Financing Rate (SOFR) | Variable Rate Component One | Maximum
Line of Credit Facility [Line Items]
Interest rate	2.00%
Revolving Credit Facility | The Credit Facility | Line of Credit | Secured Overnight Financing Rate (SOFR) | Variable Rate Component Two | Minimum
Line of Credit Facility [Line Items]
Interest rate	0.50%
Revolving Credit Facility | The Credit Facility | Line of Credit | Secured Overnight Financing Rate (SOFR) | Variable Rate Component Two | Maximum
Line of Credit Facility [Line Items]
Interest rate	1.00%
Revolving Credit Facility | The Credit Facility | Loans Payable
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	$ 20,000,000
Debt outstanding			0		0
Revolving Credit Facility | The Credit Facility | Letter of Credit
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	$ 40,000,000
Letters of credit outstanding			7,000,000		7,000,000
Remaining borrowing capacity			$ 168,000,000		$ 168,000,000