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Share-Based Payments (Details 1) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Summary of share based compensation expense associated with different programs [Abstract] |  |  |  |
Share-based compensation expense | $ (55.8) | $ (49.5) | $ (128.4) | $ (118.8)
Subtotal | 59.4 | 45.5 | 137.9 | 121.9
Capitalized share-based compensation costs | (1.7) | (1.5) | (4.3) | (3.0)
Share-based compensation expense included in total costs and expenses | 57.7 | 44.0 | 133.6 | 118.9
Market stock units |  |  |  |
Summary of share based compensation expense associated with different programs [Abstract] |  |  |  |
Share-based compensation expense | 9.3 | 7.4 | 25.8 | 26.5
Time-vested restricted stock units |  |  |  |
Summary of share based compensation expense associated with different programs [Abstract] |  |  |  |
Share-based compensation expense | 40.4 | 34.5 | 83.2 | 72.0
Cash settled performance shares |  |  |  |
Summary of share based compensation expense associated with different programs [Abstract] |  |  |  |
Share-based compensation expense | 0.0 | (0.1) | 0.0 | (1.7)
Performance units |  |  |  |
Summary of share based compensation expense associated with different programs [Abstract] |  |  |  |
Share-based compensation expense | 0.0 | 0.0 | 0.0 | (0.1)
Performance stock units settled in stock |  |  |  |
Summary of share based compensation expense associated with different programs [Abstract] |  |  |  |
Share-based compensation expense | 3.0 | 2.1 | 9.3 | 12.4
Performance stock units settled in cash |  |  |  |
Summary of share based compensation expense associated with different programs [Abstract] |  |  |  |
Share-based compensation expense | 3.4 | (4.0) | 9.4 | 4.9
Employee stock purchase plan |  |  |  |
Summary of share based compensation expense associated with different programs [Abstract] |  |  |  |
Share-based compensation expense | $ 3.3 | $ 5.6 | $ 10.2 | $ 7.9

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