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Equity Incentive Plans - Narrative (Details) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026 USD ($) plan shares	Sep. 30, 2025 USD ($)	Sep. 30, 2026 USD ($) plan shares	Sep. 30, 2025 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity compensation plans \| plan	4		4
Share based compensation income tax benefit			$ 0
Capitalized share based compensation			0
Stock based compensation expense	$ 54	$ 51	160	$ 140
Option, costs not yet recognized	27		27
Intrinsic value of stock options exercised			51
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cost not yet recognized	$ 524		$ 524
Period for recognition			2 years 10 months 24 days
Fair value of awards vested			$ 195
RSUs \| Share-Based Payment Arrangement, Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			1 year
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period for recognition			1 year 4 months 24 days
Percentage of fair value common stock, threshold	100.00%		100.00%
Expiration period			10 years
Expiration period, following termination			3 months
Income Statement Location [Axis]: us-gaap:CostOfRevenue
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	$ 0		$ 0
Income Statement Location [Axis]: us-gaap:ResearchAndDevelopmentExpense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	43	41	126	114
Income Statement Location [Axis]: us-gaap:SellingGeneralAndAdministrativeExpense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	$ 11	$ 10	$ 34	$ 26
Minimum \| RSUs \| Share-Based Payment Arrangement, Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			1 year
Minimum \| Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			1 year
Maximum \| RSUs \| Share-Based Payment Arrangement, Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			4 years
Maximum \| Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			4 years
2021 Incentive Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant (in shares) \| shares	311		311