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Stockholders’ Equity - Share-Based Payment Arrangement, Expensed and Capitalized, Amount (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total stock-based compensation expense	$ 136	$ 4	$ 145	$ 9
Cost of revenue
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total stock-based compensation expense	2	0	4	0
Operations and support
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total stock-based compensation expense	5	0	5	0
Employee benefits and share-based compensation			4
Research and development
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total stock-based compensation expense	75	2	54	4
Employee benefits and share-based compensation			79
Sales and marketing
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total stock-based compensation expense	23	1	32	2
Employee benefits and share-based compensation			8
General and administrative
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total stock-based compensation expense	$ 31	$ 1	50	$ 3
Employee benefits and share-based compensation			$ 4

X

- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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