Other Assets (Prepaid Expenses and Other Current Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Income taxes receivable	$ 214.0	$ 173.8
Prepaid expenses	114.3	85.3
Inventories	96.6	72.2
Other non-trade receivables	59.8	32.2
Reinsurance receivable	31.9	31.0
Prepaid fees for cloud-based hosting arrangements, current	14.4	12.9
Other current assets	5.5	3.0
Total	$ 536.5	$ 410.4