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v3.19.3.a.u2

Consolidated Statements of Operations (Parenthetical) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Costs and expenses: |  |  |
Amortization of intangible assets | $ 33 | $ 34 | $ 32
Depreciation | 93 | 82 | 79
Amortization adjustment | 73 | 67 | 62
Stock-based compensation: |  |  |
Stock-based compensation | 124 | 118 | 96
Cost of Revenue |  |  |
Stock-based compensation: |  |  |
Stock-based compensation | 1 | 1 |
Selling and Marketing |  |  |
Stock-based compensation: |  |  |
Stock-based compensation | 23 | 21 | 21
Technology and Content |  |  |
Stock-based compensation: |  |  |
Stock-based compensation | 55 | 51 | 40
General and Administrative |  |  |
Stock-based compensation: |  |  |
Stock-based compensation | 45 | 45 | 35
Acquired Technology |  |  |
Costs and expenses: |  |  |
Amortization of intangible assets | 10 | 8 | 8
Website Development Costs |  |  |
Costs and expenses: |  |  |
Depreciation | $ 63 | $ 59 | $ 54

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