Segment Reporting (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenue and Long-Lived Assets and Goodwill by Geographic Region
Revenue	$ 14,289.4	$ 13,171.1	$ 14,953.7
Americas
Revenue and Long-Lived Assets and Goodwill by Geographic Region
Revenue	8,005.8	7,852.5	8,882.2
Long-lived assets and goodwill	7,629.2	7,610.9	7,782.0
EMEA
Revenue and Long-Lived Assets and Goodwill by Geographic Region
Revenue	4,487.2	3,814.9	4,422.0
Long-lived assets and goodwill	3,615.5	3,142.3	3,061.3
Asia-Pacific
Revenue and Long-Lived Assets and Goodwill by Geographic Region
Revenue	1,796.4	1,503.7	1,649.5
Long-lived assets and goodwill	$ 689.0	$ 665.1	$ 658.9