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Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Deferred tax assets:    
Net operating loss carryforwards $ 1,232 $ 1,539
Tax credit carryforwards 844 664
Accruals and reserves 113 123
Non-income tax accruals 78 68
Stock-based compensation 70 111
Operating lease liabilities 62 73
Intangible assets 158 188
Capitalized research and development costs 671 413
Other 55 37
Gross deferred tax assets 3,283 3,216
Valuation allowance (364) (3,166)
Total deferred tax assets 2,919 50
Deferred tax liabilities:    
Property and equipment basis differences (18) (9)
Operating lease assets (18) (23)
Other (2) (2)
Total deferred tax liabilities (38) (34)
Total net deferred tax assets $ 2,881 $ 16