Summary of Significant Accounting Policies - Basis of Presentation (Details) - Flipkart - USD ($) $ in Billions	1 Months Ended	3 Months Ended
Jul. 31, 2021	Oct. 31, 2021
Summary of Investment Holdings [Line Items]
Subsidiary equity funding	$ 3.6
Subsequent Event
Summary of Investment Holdings [Line Items]
Sale of stock, percentage ownership after transaction		75.00%

Cumulative amount of cash and other consideration received by subsidiary or equity method investee in exchange for shares or stock issued or sold. Include amounts of cash received, fair value of non-cash assets received, fair value of liabilities assumed, and fair value of any other forms of consideration.

No definition available.

Name:	us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativeProceedsReceivedOnAllTransactions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration