Segment Information (Segment and Geographic Information) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Segment Reporting Information [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	41.00%
Gain (Loss) on Disposition of Stock in Subsidiary or Equity Method Investee	$ 128.6
Document Fiscal Year Focus	2021
Total revenues	$ 5,124.6	$ 4,714.4
Operating Income	2,281.3	1,693.6
United States
Segment Reporting Information [Line Items]
Total revenues	2,075.5	1,871.0
Operating Income	1,125.5	892.4
International Operated Markets
Segment Reporting Information [Line Items]
Total revenues	2,556.2	2,404.3
Operating Income	953.8	879.1
International Developmental Licensed Markets and Corporate
Segment Reporting Information [Line Items]
Total revenues	492.9	439.1
Operating Income	$ 202.0	$ (77.9)