Revenue (Disaggregation of Revenue by Geographical Area) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Revenue	$ 34,124.1	$ 28,541.4	$ 28,318.4
U.S.
Disaggregation of Revenue [Line Items]
Revenue	21,791.0	18,190.0	16,811.0
Europe
Disaggregation of Revenue [Line Items]
Revenue	6,174.7	4,299.2	4,776.8
Japan
Disaggregation of Revenue [Line Items]
Revenue	1,672.6	1,747.3	2,367.0
China
Disaggregation of Revenue [Line Items]
Revenue	1,539.7	1,452.8	1,661.4
Other foreign countries
Disaggregation of Revenue [Line Items]
Revenue	$ 2,946.2	$ 2,852.0	$ 2,702.2