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Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Deferred tax assets: |  |
Federal and state net operating loss carryforwards | $ 433 | $ 524
Research and development credits | 164 | 133
Share-based compensation | 102 | 66
Capitalized research and development | 100 | 0
Lease liability | 43 | 41
Interest expense limitation | 28 | 58
Debt discount on convertible notes | 18 | 0
Accruals and reserves | 3 | 13
Depreciation and amortization | 0 | 1
Inventory | 0 | 69
Other deferred tax assets | 5 | 1
Total deferred tax assets | 896 | 906
Deferred tax liabilities: |  |
Right of use assets | (31) | (32)
Intangible assets | (15) | (22)
Goodwill | (5) | (5)
Depreciation and amortization | (3) | 0
Debt discount on convertible notes | 0 | (60)
Website and software development costs | 0 | (43)
Total deferred tax liabilities | (54) | (162)
Net deferred tax assets before valuation allowance | 842 | 744
Less: valuation allowance | (843) | (746)
Net deferred tax liabilities | $ (1) | $ (2)

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