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Convertible Senior Notes - Narrative (Details) $ / shares in Units, $ in Thousands	1 Months Ended				3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022 USD ($) $ / shares	Aug. 31, 2020 USD ($)	Apr. 30, 2019 USD ($)	Apr. 30, 2018 day	Sep. 30, 2022 USD ($) $ / shares	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) $ / shares	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($) shares	Mar. 31, 2019 USD ($)
Debt Instrument [Line Items]
Repayments of convertible senior notes							$ 401,203	$ 300,755
Gain (loss) on early extinguishment of debt					$ 93,519	$ 0	93,519	$ (78,152)
Senior Notes | Sale Price Is Greater Or Equal 130%
Debt Instrument [Line Items]
Threshold trading days | day				20
Threshold consecutive trading days | day				30
Threshold percentage of stock price trigger				130.00%
Senior Notes | Trading Price Per $1,000 Principal Amount Less Than 98%
Debt Instrument [Line Items]
Threshold trading days | day				5
Threshold consecutive trading days | day				10
Senior Notes | Trading Price Per $1,000 Principal Amount Less Than 98% | Maximum
Debt Instrument [Line Items]
Threshold percentage of stock price trigger				98.00%
Senior Notes | Fundamental Change Scenario
Debt Instrument [Line Items]
Threshold percentage of stock price trigger				100.00%
Senior Notes | 2026 Notes
Debt Instrument [Line Items]
Face value	$ 500,000	$ 1,000,000			$ 500,000		$ 500,000		$ 1,000,000
Interest rate, stated percentage		0.00%
Proceeds from issuance of debt		$ 1,000,000
Conversion ratio		0.0092978
Conversion price (in dollars per share) | $ / shares	$ 107.55				$ 107.55		$ 107.55
Repurchased face amount	$ 500,000				$ 500,000		$ 500,000
Repayments of convertible senior notes	399,900				399,900
Extinguishment incurred	1,300
Total consideration	401,200
Debt extinguished	494,700
Gain (loss) on early extinguishment of debt	93,500
Senior Notes | 0% Convertible Senior Notes Due 2026, Additional Notes
Debt Instrument [Line Items]
Face value		$ 100,000
Senior Notes | 2025 Notes
Debt Instrument [Line Items]
Face value	$ 699,979		$ 100,000		$ 699,979		$ 699,979		$ 699,982	$ 700,000
Interest rate, stated percentage										0.125%
Proceeds from issuance of debt			$ 800,000
Conversion ratio			0.0193956
Conversion price (in dollars per share) | $ / shares	$ 51.56				$ 51.56		$ 51.56
Senior Notes | 2023 Notes
Debt Instrument [Line Items]
Issuance of common stock (in shares) | shares									2,983,011

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