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Share-Based Payments (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Share-based Compensation Expense included in consolidated statements of income |  |  |  |
Share-based compensation expense | $ (49.5) | $ (55.0) | $ (118.8) | $ (104.0)
Subtotal | 45.5 | 82.9 | 121.9 | 132.4
Capitalized share-based compensation costs | (1.5) | (2.8) | (3.0) | (6.1)
Share-based compensation expense included in total costs and expenses | 44.0 | 80.1 | 118.9 | 126.3
Income tax effect | (7.0) | (13.6) | (20.3) | (21.0)
Research and development |  |  |  |
Share-based Compensation Expense included in consolidated statements of income |  |  |  |
Share-based compensation expense | 15.2 | 28.1 | 48.5 | 49.8
Selling, general and administrative |  |  |  |
Share-based Compensation Expense included in consolidated statements of income |  |  |  |
Share-based compensation expense | 30.3 | 54.8 | 73.4 | 82.6
Total share-based compensation expense, net of tax |  |  |  |
Share-based Compensation Expense included in consolidated statements of income |  |  |  |
Share-based compensation expense | $ 37.0 | $ 66.5 | $ 98.6 | $ 105.3

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