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Business Segment and Geographic Information - Summary (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Amount	$ 1,926.7	$ 1,476.0	$ 1,031.6
% of Total	100.00%	100.00%	100.00%
Distributor
Segment Reporting Information [Line Items]
Amount	$ 1,437.6	$ 1,011.6	$ 652.9
% of Total	75.00%	69.00%	63.00%
Direct
Segment Reporting Information [Line Items]
Amount	$ 489.1	$ 464.4	$ 378.7
% of Total	25.00%	31.00%	37.00%
United States
Segment Reporting Information [Line Items]
Amount	$ 1,509.5	$ 1,161.5	$ 818.4
% of Total	78.00%	79.00%	79.00%
Outside of the United States
Segment Reporting Information [Line Items]
Amount	$ 417.2	$ 314.5	$ 213.2
% of Total	22.00%	21.00%	21.00%

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