Cash, Cash Equivalents and Short-Term Investments, Net - Schedule of Cash, Cash Equivalents and Short-term Investments in Marketable Securities (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Schedule Of Available For Sale Securities [Line Items]
Cash and Cash Equivalents	$ 1,071,764	$ 1,030,506
Short-Term Investments, Net	450,117	416,080
Total	1,521,881	1,446,586
Cash
Schedule Of Available For Sale Securities [Line Items]
Cash and Cash Equivalents	264,896	339,717
Total	264,896	339,717
Level 1 \| Money Market Funds
Schedule Of Available For Sale Securities [Line Items]
Cash and Cash Equivalents	778,950	640,233
Total	778,950	640,233
Level 2 \| Commercial Paper
Schedule Of Available For Sale Securities [Line Items]
Cash and Cash Equivalents	24,048	50,556
Short-Term Investments, Net	154,761	126,507
Total	178,809	177,063
Level 2 \| Corporate Debt Securities
Schedule Of Available For Sale Securities [Line Items]
Cash and Cash Equivalents	3,870	0
Short-Term Investments, Net	157,798	180,502
Total	161,668	180,502
Level 2 \| U.S. Government and Agency Securities
Schedule Of Available For Sale Securities [Line Items]
Cash and Cash Equivalents	0	0
Short-Term Investments, Net	137,558	109,071
Total	$ 137,558	$ 109,071

Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(9))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Name:	us-gaap_CashCashEquivalentsAndShortTermInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant