Revenue (Disaggregation of Revenue by Geographical Area) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Revenues	$ 28,318.4	$ 24,539.8	$ 22,319.5
U.S.
Disaggregation of Revenue [Line Items]
Revenues	16,811.0	14,229.3	12,722.6
Europe
Disaggregation of Revenue [Line Items]
Revenues	4,776.8	4,187.7	3,765.0
Japan
Disaggregation of Revenue [Line Items]
Revenues	2,367.0	2,583.1	2,547.6
China
Disaggregation of Revenue [Line Items]
Revenues	1,661.4	1,116.9	939.4
Other foreign countries
Disaggregation of Revenue [Line Items]
Revenues	$ 2,702.2	$ 2,422.7	$ 2,344.9