Summary of Significant Accounting Policies - Convertible Senior Notes (Details) - 2026 Notes - Senior Notes	Jan. 20, 2021 USD ($)
Debt Instrument [Line Items]
Debt amount	$ 500,000,000
Interest rate	0.00%

Face (par) amount of debt instrument at time of issuance.

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Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant