Share-Based Payments (Details 1) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Summary of share based compensation expense associated with different programs [Abstract]
Share-based compensation expense	$ (69.2)	$ 49.0
Subtotal	76.4	49.5
Capitalized share-based compensation costs	(1.5)	(3.3)
Share-based compensation expense included in total costs and expenses	74.9	46.2
Market stock units
Summary of share based compensation expense associated with different programs [Abstract]
Share-based compensation expense	19.1	7.7
Time-vested restricted stock units
Summary of share based compensation expense associated with different programs [Abstract]
Share-based compensation expense	37.5	34.7
Cash settled performance shares
Summary of share based compensation expense associated with different programs [Abstract]
Share-based compensation expense	(1.6)	(1.0)
Performance units
Summary of share based compensation expense associated with different programs [Abstract]
Share-based compensation expense	(0.1)	0.5
Performance stock units settled in stock
Summary of share based compensation expense associated with different programs [Abstract]
Share-based compensation expense	10.3	2.0
Performance stock units settled in cash
Summary of share based compensation expense associated with different programs [Abstract]
Share-based compensation expense	8.9	1.0
Employee stock purchase plan
Summary of share based compensation expense associated with different programs [Abstract]
Share-based compensation expense	$ 2.3	$ 4.6