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Debt - Additional Information (Details)				3 Months Ended	12 Months Ended
	Nov. 03, 2022 USD ($)	May 15, 2020 USD ($) day $ / shares	Feb. 07, 2020 USD ($)	Sep. 30, 2021 USD ($)	Dec. 31, 2022 USD ($) day $ / shares	Dec. 31, 2021 USD ($) $ / shares	Dec. 31, 2020 USD ($)	Dec. 31, 2024	Dec. 31, 2023	Sep. 30, 2023 USD ($)	Jan. 01, 2022 USD ($)	Sep. 17, 2020 USD ($)	May 12, 2020 $ / shares	Mar. 11, 2019 USD ($)
Debt Instrument
Price per share (in dollars per share) | $ / shares					$ 11.02	$ 42.73							$ 29.53
Net carrying amount of liability component					$ 839,494,000	$ 711,437,000
Additional Paid in Capital					(10,335,013,000)	(9,706,293,000)
Accumulated deficit					(9,940,595,000)	(8,362,572,000)
Repayment of loans					67,639,000	44,446,000	$ 50,639,000
Covenant minimum liquidity requirements	$ 1,500,000,000
Acquisition cash consideration trigger, percent	350.00%
Acquisition cash consideration trigger	$ 75,000,000
Fixed coverage ratio	125.00%
Other financing outstanding					200,000
Adjustments
Debt Instrument
Additional Paid in Capital											$ 140,000,000
Accumulated deficit											6,500,000
Forecast
Debt Instrument
Senior secured leverage ratio								300.00%	350.00%
Revolving Credit Facility | JPMorgan Chase Bank
Debt Instrument
Maximum borrowing capacity	$ 420,000,000
Fed Funds Effective Rate | Revolving Credit Facility | JPMorgan Chase Bank
Debt Instrument
Spread on variable rate	0.50%
Secured Overnight Financing Rate (SOFR) | Revolving Credit Facility | JPMorgan Chase Bank
Debt Instrument
Spread on variable rate	1.00%
Minimum | Revolving Credit Facility | JPMorgan Chase Bank
Debt Instrument
Covenant leverage ratio	1.50%
Leverage ratio during the period	0.05%
Commitment fee	0.225%
Maximum | Revolving Credit Facility | JPMorgan Chase Bank
Debt Instrument
Covenant leverage ratio	2.25%
Leverage ratio during the period	1.25%
Commitment fee	0.375%
Line of Credit | Revolving Credit Facility | JPMorgan Chase Bank
Debt Instrument
Maximum borrowing capacity	$ 168,000,000
Proceeds from lines of credit	53,500,000
Flexdrive Services, LLC | Revolving Credit Facility
Debt Instrument
Maximum exposure to loss under terms of the guarantee					$ 3,000,000
Procurement Provider | Revolving Credit Facility
Debt Instrument
Maximum borrowing capacity												$ 50,000,000		$ 95,000,000
Convertible Senior Notes Due 2025
Debt Instrument
Interest Rate					1.50%
Net carrying amount of liability component					$ 740,609,000	604,317,000
Convertible Senior Notes Due 2025 | Convertible Debt
Debt Instrument
Aggregate principal		$ 747,500,000
Interest Rate		1.50%
Net proceeds from issuance of convertible debt		$ 733,200,000
Conversion rate		0.0260491
Initial conversion price (in dollars per share) | $ / shares		$ 38.39
Initial conversion price of convertible debt, premium percentage		30.00%
Unamortized debt discount and debt issuance costs					$ 6,889,000
Limitation on sale of common stock, sale price threshold, number of trading days | day		20			20
Aggregate principal amount				$ 2,000
Number of consecutive business days		5 days
Redemption price percentage		100.00%
Net carrying amount of liability component		$ 558,300,000			$ 740,609,000
Carrying value of equity component		$ 189,200,000
Effective interest rate		8.00%
Debt and equity components of convertible loans, discounts and commissions payable		$ 14,300,000
If-converted value in excess of principal					214,600,000
Fair value of long-term debt					$ 656,800,000
Cost of capped call transactions		$ 132,700,000
Initial cap price (in dollars per share) | $ / shares		$ 73.83
Initial cap price premium percentage		150.00%
Convertible Senior Notes Due 2025 | Convertible Debt | Adjustments
Debt Instrument
Aggregate principal											$ 133,500,000
Convertible Senior Notes Due 2025 | Convertible Debt | Revolving Credit Facility | JPMorgan Chase Bank
Debt Instrument
Outstanding debt trigger amount	$ 1,250,000,000
Convertible Senior Notes Due 2025 | Convertible Debt | Debt Instrument, Redemption, Period One
Debt Instrument
Threshold percentage of stock price trigger		130.00%			130.00%
Limitation on sale of common stock, sale price threshold, trading period | day		30			30
Convertible Senior Notes Due 2025 | Convertible Debt | Debt Instrument, Redemption, Period Two
Debt Instrument
Threshold percentage of stock price trigger		98.00%
Limitation on sale of common stock, sale price threshold, trading period | day		5
Non-Revolving Loan
Debt Instrument
Net carrying amount of liability component					$ 24,429,000	75,680,000
Fair value of long-term debt					$ 24,900,000
Non-Revolving Loan | Two Year U S Treasury Note
Debt Instrument
Debt term (in months)			24 months
Variable interest percentage			3.40%
Non-Revolving Loan | Three Year U S Treasury Note
Debt Instrument
Debt term (in months)			36 months
Variable interest percentage			3.40%
Non-Revolving Loan | Five Year U S Treasury Note
Debt Instrument
Debt term (in months)			48 months
Variable interest percentage			3.40%
Non-Revolving Loan | Minimum
Debt Instrument
Interest Rate					2.88%
Debt term (in months)			24 months
Non-Revolving Loan | Maximum
Debt Instrument
Interest Rate					4.50%
Debt term (in months)			48 months
Non-Revolving Loan | Flexdrive Services, LLC
Debt Instrument
Maximum borrowing capacity			$ 130,000,000
Master Vehicle Loan
Debt Instrument
Net carrying amount of liability component					$ 74,456,000	$ 31,440,000
Fair value of long-term debt					$ 72,300,000
Interest rate swap term			3 years
Variable interest spread rate			2.10%
Master Vehicle Loan | LIBOR
Debt Instrument
Spread on variable rate			3.00%
Master Vehicle Loan | Minimum
Debt Instrument
Interest Rate					2.60%
Debt term (in months)			12 months
Master Vehicle Loan | Maximum
Debt Instrument
Interest Rate					6.85%
Debt term (in months)			48 months
Master Vehicle Loan | Flexdrive Services, LLC
Debt Instrument
Maximum borrowing capacity			$ 50,000,000
Term Loan | Revolving Credit Facility | JPMorgan Chase Bank
Debt Instrument
Senior secured leverage ratio	250.00%
Term Loan | Revolving Credit Facility | Forecast | JPMorgan Chase Bank
Debt Instrument
Maximum borrowing capacity										$ 300,000,000

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