Segment Reporting (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenue and Long-Lived Assets and Goodwill by Geographic Region
Revenue	$ 3,571.6	$ 2,800.7	$ 6,998.6	$ 6,207.6
Americas
Revenue and Long-Lived Assets and Goodwill by Geographic Region
Revenue	2,027.8	1,718.9	4,063.6	3,787.6
Long-lived assets and goodwill	7,689.5	7,574.8	7,689.5	7,574.8
EMEA
Revenue and Long-Lived Assets and Goodwill by Geographic Region
Revenue	1,096.4	762.0	2,087.6	1,740.9
Long-lived assets and goodwill	3,091.1	2,909.8	3,091.1	2,909.8
Asia-Pacific
Revenue and Long-Lived Assets and Goodwill by Geographic Region
Revenue	447.4	319.8	847.4	679.1
Long-lived assets and goodwill	$ 634.5	$ 638.8	$ 634.5	$ 638.8