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v3.21.1

Condensed Consolidated Statements of Operations (Parenthetical) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Costs and expenses: |  |
Amortization adjustment | $ 17 | $ 18
Stock-based compensation: |  |
Stock-based compensation | 29 | 26
Selling and Marketing |  |
Stock-based compensation: |  |
Stock-based compensation | 4 | 4
Technology and Content |  |
Stock-based compensation: |  |
Stock-based compensation | 12 | 11
General and Administrative |  |
Stock-based compensation: |  |
Stock-based compensation | 13 | 11
Acquired Technology |  |
Costs and expenses: |  |
Amortization of intangible assets | 1 | 1
Website Development Costs |  |
Costs and expenses: |  |
Depreciation | $ 16 | $ 17

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