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Stock-Based Compensation - Compensation (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Amounts recognized in the financial statements |  |  |  |
Stock-based compensation programs expense | $ 52 | $ 52 | $ 172 | $ 182
Income tax benefits | (15) | (28) | (54) | (108)
Stock-based compensation expenses (benefits), net of tax | 37 | 24 | 118 | 74
Cost of sales |  |  |  |
Amounts recognized in the financial statements |  |  |  |
Stock-based compensation programs expense | 10 | 9 | 32 | 31
Selling, general and administrative expenses |  |  |  |
Amounts recognized in the financial statements |  |  |  |
Stock-based compensation programs expense | 35 | 36 | 108 | 118
Research, development and related expenses |  |  |  |
Amounts recognized in the financial statements |  |  |  |
Stock-based compensation programs expense | $ 7 | $ 7 | $ 32 | $ 33

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