Fair Value Measurements - Financial Assets and Liabilities Subject to Fair Value Measurements (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Financial instruments carried at fair value (asset positions):
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration]	Prepaid expenses and other current assets	Prepaid expenses and other current assets
Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Financial instruments carried at fair value (liability positions):
Other long-term liabilities, contingent consideration	$ (114.4)	$ (186.5)
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other current liabilities	Other current liabilities
Derivative Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Noncurrent	Other Liabilities, Noncurrent
Recurring basis
Financial instruments carried at fair value (asset positions):
Derivative asset current, foreign currency forward contracts	$ 47.5	$ 44.5
Other assets, foreign currency forward contracts	0.8	2.0
Total financial assets	7,807.9	4,254.5
Financial instruments carried at fair value (liability positions):
Other current liabilities, foreign currency forward contracts	(14.3)	(5.6)
Other current liabilities, contingent consideration	(14.6)	0.0
Other long-term liabilities, foreign currency forward contracts	(0.9)	(2.7)
Other long-term liabilities, contingent consideration	(114.4)	(186.5)
Total financial liabilities	(144.2)	(194.8)
Recurring basis \| Level 1
Financial instruments carried at fair value (asset positions):
Derivative asset current, foreign currency forward contracts	0.0	0.0
Other assets, foreign currency forward contracts	0.0	0.0
Total financial assets	5,378.5	3,864.4
Financial instruments carried at fair value (liability positions):
Other current liabilities, foreign currency forward contracts	0.0	0.0
Other current liabilities, contingent consideration	0.0	0.0
Other long-term liabilities, foreign currency forward contracts	0.0	0.0
Other long-term liabilities, contingent consideration	0.0	0.0
Total financial liabilities	0.0	0.0
Recurring basis \| Level 2
Financial instruments carried at fair value (asset positions):
Derivative asset current, foreign currency forward contracts	47.5	44.5
Other assets, foreign currency forward contracts	0.8	2.0
Total financial assets	2,429.4	390.1
Financial instruments carried at fair value (liability positions):
Other current liabilities, foreign currency forward contracts	(14.3)	(5.6)
Other current liabilities, contingent consideration	0.0	0.0
Other long-term liabilities, foreign currency forward contracts	(0.9)	(2.7)
Other long-term liabilities, contingent consideration	0.0	0.0
Total financial liabilities	(15.2)	(8.3)
Recurring basis \| Level 3
Financial instruments carried at fair value (asset positions):
Derivative asset current, foreign currency forward contracts	0.0	0.0
Other assets, foreign currency forward contracts	0.0	0.0
Total financial assets	0.0	0.0
Financial instruments carried at fair value (liability positions):
Other current liabilities, foreign currency forward contracts	0.0	0.0
Other current liabilities, contingent consideration	(14.6)	0.0
Other long-term liabilities, foreign currency forward contracts	0.0	0.0
Other long-term liabilities, contingent consideration	(114.4)	(186.5)
Total financial liabilities	(129.0)	(186.5)
Recurring basis \| Money market funds
Financial instruments carried at fair value (asset positions):
Cash equivalents:	5,162.6	3,478.1
Recurring basis \| Money market funds \| Level 1
Financial instruments carried at fair value (asset positions):
Cash equivalents:	5,162.6	3,478.1
Recurring basis \| Money market funds \| Level 2
Financial instruments carried at fair value (asset positions):
Cash equivalents:	0.0	0.0
Recurring basis \| Money market funds \| Level 3
Financial instruments carried at fair value (asset positions):
Cash equivalents:	0.0	0.0
Recurring basis \| Time deposits
Financial instruments carried at fair value (asset positions):
Cash equivalents:	2,000.0	0.0
Recurring basis \| Time deposits \| Level 1
Financial instruments carried at fair value (asset positions):
Cash equivalents:	0.0	0.0
Recurring basis \| Time deposits \| Level 2
Financial instruments carried at fair value (asset positions):
Cash equivalents:	2,000.0	0.0
Recurring basis \| Time deposits \| Level 3
Financial instruments carried at fair value (asset positions):
Cash equivalents:	0.0	0.0
Recurring basis \| Corporate debt securities
Financial instruments carried at fair value (asset positions):
Cash equivalents:	5.8	0.0
Marketable securities:	87.0	90.9
Recurring basis \| Corporate debt securities \| Level 1
Financial instruments carried at fair value (asset positions):
Cash equivalents:	0.0	0.0
Marketable securities:	0.0	0.0
Recurring basis \| Corporate debt securities \| Level 2
Financial instruments carried at fair value (asset positions):
Cash equivalents:	5.8	0.0
Marketable securities:	87.0	90.9
Recurring basis \| Corporate debt securities \| Level 3
Financial instruments carried at fair value (asset positions):
Cash equivalents:	0.0	0.0
Marketable securities:	0.0	0.0
Recurring basis \| Commercial paper
Financial instruments carried at fair value (asset positions):
Cash equivalents:	204.5	0.0
Marketable securities:	55.8	252.7
Recurring basis \| Commercial paper \| Level 1
Financial instruments carried at fair value (asset positions):
Cash equivalents:	0.0	0.0
Marketable securities:	0.0	0.0
Recurring basis \| Commercial paper \| Level 2
Financial instruments carried at fair value (asset positions):
Cash equivalents:	204.5	0.0
Marketable securities:	55.8	252.7
Recurring basis \| Commercial paper \| Level 3
Financial instruments carried at fair value (asset positions):
Cash equivalents:	0.0	0.0
Marketable securities:	0.0	0.0
Recurring basis \| Corporate equity securities
Financial instruments carried at fair value (asset positions):
Marketable securities:	116.8	230.9
Recurring basis \| Corporate equity securities \| Level 1
Financial instruments carried at fair value (asset positions):
Marketable securities:	88.8	230.9
Recurring basis \| Corporate equity securities \| Level 2
Financial instruments carried at fair value (asset positions):
Marketable securities:	28.0	0.0
Recurring basis \| Corporate equity securities \| Level 3
Financial instruments carried at fair value (asset positions):
Marketable securities:	0.0	0.0
Recurring basis \| U.S. Treasury securities
Financial instruments carried at fair value (asset positions):
Marketable securities:	0.0	86.4
Recurring basis \| U.S. Treasury securities \| Level 1
Financial instruments carried at fair value (asset positions):
Marketable securities:	0.0	86.4
Recurring basis \| U.S. Treasury securities \| Level 2
Financial instruments carried at fair value (asset positions):
Marketable securities:	0.0	0.0
Recurring basis \| U.S. Treasury securities \| Level 3
Financial instruments carried at fair value (asset positions):
Marketable securities:	0.0	0.0
Recurring basis \| Government-sponsored enterprise securities
Financial instruments carried at fair value (asset positions):
Marketable securities:	127.1	69.0
Recurring basis \| Government-sponsored enterprise securities \| Level 1
Financial instruments carried at fair value (asset positions):
Marketable securities:	127.1	69.0
Recurring basis \| Government-sponsored enterprise securities \| Level 2
Financial instruments carried at fair value (asset positions):
Marketable securities:	0.0	0.0
Recurring basis \| Government-sponsored enterprise securities \| Level 3
Financial instruments carried at fair value (asset positions):
Marketable securities:	$ 0.0	$ 0.0

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Indicates line item in statement of financial position that includes derivative asset classified as current.

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Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities.

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Amount of investment in marketable security.

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