Acquisitions and Other Transactions (Unaudited Pro Forma Financial Results) (Details) - Oyster Point Pharma Acquisition - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Revenue	$ 3,729.1	$ 4,194.4
Business Acquisition, Pro Forma Net Income (Loss)	$ 260.5	$ 337.0
Basic (in usd per share)	$ 220,000	$ 280,000
Diluted (in usd per share)	$ 220,000	$ 280,000
Basic (in shares)	1,202,500	1,210,500
Diluted (in shares)	1,205,600	1,213,100

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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