Share-Based Payments - Share-Based Compensation Expense by Share-Based Compensation Program (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Summary of share based compensation expense associated with different programs [Abstract]
Share-based compensation expense	$ (72.9)	$ (74.1)	$ (149.0)	$ (153.0)
Subtotal	72.9	76.3	144.3	157.7
Capitalized share-based compensation costs	(2.3)	(2.6)	(5.6)	(5.9)
Share-based compensation expense included in total costs and expenses	70.6	73.7	138.7	151.8
Market stock units
Summary of share based compensation expense associated with different programs [Abstract]
Share-based compensation expense	0.1	1.3	0.4	3.5
Time-vested restricted stock units
Summary of share based compensation expense associated with different programs [Abstract]
Share-based compensation expense	58.3	59.9	115.6	121.6
Performance stock units settled in stock
Summary of share based compensation expense associated with different programs [Abstract]
Share-based compensation expense	11.7	9.8	22.2	19.3
Performance stock units settled in cash
Summary of share based compensation expense associated with different programs [Abstract]
Share-based compensation expense	0.1	2.2	(2.0)	4.7
Employee stock purchase plan
Summary of share based compensation expense associated with different programs [Abstract]
Share-based compensation expense	1.8	2.1	6.3	6.8
Options
Summary of share based compensation expense associated with different programs [Abstract]
Share-based compensation expense	$ 0.9	$ 1.0	$ 1.8	$ 1.8