Borrowings - Narrative (Details) $ / shares in Units, shares in Millions		3 Months Ended		6 Months Ended
	Aug. 20, 2021 USD ($) day $ / shares shares	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Apr. 24, 2024 USD ($)	Apr. 23, 2024 USD ($)	Dec. 31, 2023 USD ($)
ULT Warehouse Credit Facility - UnCommitted | Revolving Credit Facility
Schedule of Borrowings [Line Items]
Maximum borrowing capacity		$ 150,000,000		$ 150,000,000		$ 150,000,000	$ 75,000,000
2026 ("Notes")
Schedule of Borrowings [Line Items]
Convertible notes payable		654,500,000		654,500,000				$ 653,000,000
Purchase of capped calls	$ 58,500,000
Initial conversion price (in dollars per share) | $ / shares	$ 285.26
Initial cap price (in dollars per share) | $ / shares	$ 400.36
Capped call cover (in shares) | shares	2.3
2026 ("Notes") | Fair Value, Inputs, Level 2
Schedule of Borrowings [Line Items]
Fair value of convertible senior notes		531,000,000.0		531,000,000.0				$ 488,700,000
2026 ("Notes") | Convertible Debt
Schedule of Borrowings [Line Items]
Aggregate principal amount	$ 661,300,000
Stated interest rate	0.25%
Additional aggregate principal	$ 86,300,000
Net proceeds from sale of the notes	$ 645,500,000
Initial conversion rate (in shares)	0.0035056
Initial conversion price (in dollars per share) | $ / shares	$ 285.26
Percent of the principal amount	100.00%
2026 ("Notes") | Convertible Debt | Conversion Period One
Schedule of Borrowings [Line Items]
Trading days | day	20
Consecutive trading days | day	30
Conversion price maximum threshold	130.00%
2026 ("Notes") | Convertible Debt | Conversion Period Two
Schedule of Borrowings [Line Items]
Trading days | day	5
Consecutive trading days | day	5
Percentage of the last reported sale price	98.00%
2026 ("Notes") | Convertible Debt | Conversion Period Three
Schedule of Borrowings [Line Items]
Redemption price (in percent)	100.00%
Trading days | day	20
Consecutive trading days | day	30
Conversion price maximum threshold	130.00%
Gross debt issuance cost	$ 15,700,000
Amortization of debt issuance costs		$ 800,000	$ 800,000	$ 1,500,000	$ 1,500,000
Effective interest rate		0.70%		0.70%