Summary of Significant Accounting Policies - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total	$ 6,821.3	$ 5,706.2	$ 2,930.2	$ 2,969.6
Currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total	(322.0)	(231.8)
Unrealized losses on defined benefit plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total	(0.2)	(15.7)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total	$ (322.2)	$ (247.5)	$ (208.7)	$ (85.2)