Debt and Credit Facilities - Additional Information (Details)	1 Months Ended				3 Months Ended		6 Months Ended
	Feb. 29, 2024 USD ($) d $ / shares	Sep. 30, 2022 USD ($)	Jun. 30, 2021 USD ($) Extension	Aug. 31, 2020 USD ($) d $ / shares shares	Mar. 31, 2024 USD ($) d $ / shares shares	Mar. 31, 2023 USD ($)	Jun. 30, 2021 USD ($)	Dec. 31, 2023 USD ($)	Nov. 30, 2022 USD ($)
Debt Instrument [Line Items]
Letters of credit outstanding amount					$ 281,000,000			$ 320,700,000
Debt instrument, outstanding amount					0
Loss on extinguishment of debt					211,018,000	$ 0
Tax effect of unwind existing bond hedge					2,366,000			6,977,000
Deferred tax liabilities					9,763,000			9,775,000
Effective tax rate and tax benefit					49,900,000
Deferred tax assets					157,547,000			$ 140,162,000
2022 Delayed Draw Term Loan
Debt Instrument [Line Items]
Debt issuance costs incurred					$ 900,000
Interest rate					6.40%			6.60%
Interest expense					$ 6,000,000	5,100,000
Debt instrument, outstanding amount					350,000,000			$ 350,000,000	$ 350,000,000
Debt amount		$ 350,000,000
Debt issuance date		Sep. 30, 2022
Debt instrument, maturity period		3 years
Unused term loan commitments rate		0.175%
Convertible Senior Notes Due 2025
Debt Instrument [Line Items]
Interest rate				0.25%
Interest expense					$ 3,700,000	800,000
Debt amount				$ 400,000,000
Exercise of option by initial purchasers aggregate principal amount				50,000,000
Proceeds from issuance and sale of debt				389,700,000
Transaction fees and other third-party offering expenses				$ 10,300,000
Debt instrument, payment terms					The Convertible Senior Notes accrue interest at a rate of 0.25% per annum, payable semi-annually on February 15 and August 15 of each year beginning on February 15, 2021
Debt instrument, frequency of periodic payment					semi-annually
Maturity Date				Aug. 15, 2025
Convertible note converted each amount					$ 1,000
Convertible notes converted each into shares of common stock | shares					22.2913
Debt Instrument, conversion price | $ / shares					$ 44.86
Threshold trading days | d				20	51
Threshold consecutive trading days | d				30
Conversion percentage of stock price trigger				130.00%
Number of business day period				5 days
Consecutive trading day period				5 days
Convertible principal amount				$ 1,000
Measurement period, percentage				98.00%
Percentage of principal amount to redeem convertible senior notes				100.00%
Percentage of convertible senior notes repurchased at cash				100.00%
Net carrying value of notes					$ 115,400,000			$ 396,500,000
Convertible Senior Notes due 2029
Debt Instrument [Line Items]
Interest rate	2.625%
Interest expense					2,400,000
Debt amount	$ 800,000,000
Exercise of option by initial purchasers aggregate principal amount	100,000,000
Proceeds from issuance and sale of debt	781,100,000
Transaction fees and other third-party offering expenses	$ 18,900,000
Debt instrument, payment terms	The 2029 Convertible Notes accrue interest at a rate of 2.625% per annum, payable semi-annually on March 1 and September 1 of each year beginning on September 1, 2024
Debt instrument, frequency of periodic payment	semi-annually
Maturity Date	Mar. 01, 2029
Convertible note converted each amount					$ 1,000
Convertible notes converted each into shares of common stock | shares					10.6256
Debt Instrument, conversion price | $ / shares					$ 94.11
Threshold trading days | d	20				51
Threshold consecutive trading days | d	30
Conversion percentage of stock price trigger	130.00%
Number of business day period	5 days
Consecutive trading day period	5 days
Convertible principal amount	$ 1,000
Measurement period, percentage	98.00%
Percentage of principal amount to redeem convertible senior notes	100.00%
Percentage of convertible senior notes repurchased at cash	100.00%
Net carrying value of notes					$ 781,500,000
Maximum | 2022 Delayed Draw Term Loan
Debt Instrument [Line Items]
Increase in term loan		$ 150,000,000
Convertible Note Hedge And Warrant Transaction
Debt Instrument [Line Items]
Tax effect of unwind existing bond hedge					46,200,000
Convertible Note Hedge And Warrant Transaction | Convertible Senior Notes Due 2025
Debt Instrument [Line Items]
Purchase of convertible senior notes	$ 228,100,000
Proceeds from issuance and sale of debt					$ 391,800,000
Bond hedge term					5 years
Number of shares issuable upon conversion | shares				8,900,000
Cost of convertible note hedge transaction				$ 55,000,000
Number of common stock acquired by offsetting sale warrants. | shares					8,900,000
Exercise price of warrants | $ / shares					$ 66.46
Proceeds from issuance of warrants					$ 13,800,000
Purchase of bond hedges and sale of warrants				$ 41,200,000
Deferred tax liabilities					16,200,000
Deferred tax assets					16,500,000
Convertible Note Hedge And Warrant Transaction | Convertible Senior Notes Due 2025 | ASC 2020-06
Debt Instrument [Line Items]
Deferred tax liability reversed					13,900,000
Additional deferred tax liability related to capitalized debt issuance costs					400,000
Adjustment to deferred tax asset through retained earnings					$ 900,000
Convertible Note Hedge And Warrant Transaction | Convertible Senior Notes due 2025
Debt Instrument [Line Items]
Interest rate					0.25%
Loss on extinguishment of debt					$ 214,200,000
Acceleration charge of amortization of debt issuance costs					3,200,000
Convertible Note Hedge And Warrant Transaction | Convertible Senior Notes Due 2025 Note Hedge And Warrants
Debt Instrument [Line Items]
Purchase of convertible senior notes	56,500,000
Proceeds from issuance and sale of debt					$ 103,800,000
Proceeds from partial termination of note hedge and warrants	90,600,000
Convertible Note Hedge And Warrant Transaction | Minimum [Member] | Convertible Senior Notes Due 2025
Debt Instrument [Line Items]
Debt Instrument, conversion price | $ / shares				$ 44.86
Percentage of bond hedge and warrant transactions increased conversion price				35.00%
Convertible Note Hedge And Warrant Transaction | Maximum | Convertible Senior Notes Due 2025
Debt Instrument [Line Items]
Debt Instrument, conversion price | $ / shares				$ 66.46
Percentage of bond hedge and warrant transactions increased conversion price				100.00%
Capped Call Transaction
Debt Instrument [Line Items]
Deferred tax assets	$ 22.3
Capped Call Transaction | Convertible Senior Notes Due 2025
Debt Instrument [Line Items]
Debt Instrument, conversion price | $ / shares	$ 131.7575
Premium of reported sale price percentage	75.00%
Convertible Notes Converted Sale Price Of Common Stock | $ / shares	$ 75.29
Cost of convertible note hedge transaction	$ 88,400,000
Base Rate | Minimum [Member] | 2022 Delayed Draw Term Loan
Debt Instrument [Line Items]
Margin interest rate		0.00%
Base Rate | Maximum | 2022 Delayed Draw Term Loan
Debt Instrument [Line Items]
Margin interest rate		0.50%
SOFR Benchmark Rate | Minimum [Member] | 2022 Delayed Draw Term Loan
Debt Instrument [Line Items]
Margin interest rate		0.875%
SOFR Benchmark Rate | Maximum | 2022 Delayed Draw Term Loan
Debt Instrument [Line Items]
Margin interest rate		1.50%
Revolving Credit Facility
Debt Instrument [Line Items]
Credit agreement date			Jun. 30, 2021
Revolving credit facility			$ 650,000,000				$ 650,000,000
Debt issuance costs incurred			1,900,000				1,900,000
Revolving credit facility			$ 550,000,000				$ 550,000,000
Credit agreement maturity period			5 years
Credit agreement number of extensions | Extension			2
Interest rate					6.60%			6.70%
Letters of credit outstanding amount					$ 42,100,000			$ 43,800,000
Interest expense					$ 300,000	$ 100,000
Revolving Credit Facility | Base Rate | Minimum [Member]
Debt Instrument [Line Items]
Margin interest rate							0.00%
Revolving Credit Facility | Base Rate | Maximum
Debt Instrument [Line Items]
Margin interest rate							0.625%
Revolving Credit Facility | SOFR Benchmark Rate | Minimum [Member]
Debt Instrument [Line Items]
Margin interest rate			1.00%
Revolving Credit Facility | SOFR Benchmark Rate | Maximum
Debt Instrument [Line Items]
Margin interest rate							1.625%