Revenue and Segment Information - Narrative (Details) $ in Millions	12 Months Ended
Dec. 31, 2020 USD ($) segment	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Segment Reporting Information [Line Items]
Revenue	$ 5,255.0	$ 5,517.9	$ 5,878.3
Number of operating segments \| segment	3
Number of reportable segments \| segment	3
One Customer \| Revenue from Contract with Customer Benchmark \| Customer Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk, percentage	11.00%
Product [Member]
Segment Reporting Information [Line Items]
Revenue	$ 5,227.8	5,492.0	5,849.0
Product development agreements
Segment Reporting Information [Line Items]
Revenue	$ 27.2	$ 25.9	$ 29.3

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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