Fair Value Measurements - Financial Assets and Liabilities Subject to Fair Value Measurements (Details) - Recurring Basis - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Financial instruments carried at fair value (asset positions):
Derivative asset current, foreign currency forward contracts	$ 19.5	$ 47.5
Other assets, foreign currency forward contracts	0.3	0.8
Total financial assets	9,405.0	7,807.9
Financial instruments carried at fair value (liability positions):
Other current liabilities, foreign currency forward contracts	(20.5)	(14.3)
Other current liabilities, contingent consideration	(14.8)	(14.6)
Other long-term liabilities, foreign currency forward contracts	(0.5)	(0.9)
Contingent consideration	(112.3)	(114.4)
Total financial liabilities	(148.1)	(144.2)
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	6,106.0	5,378.5
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
Contingent consideration	0.0	0.0
Total financial liabilities	0.0	0.0
Level 2
Financial instruments carried at fair value (asset positions):
Derivative asset current, foreign currency forward contracts	19.5	47.5
Other assets, foreign currency forward contracts	0.3	0.8
Total financial assets	3,299.0	2,429.4
Financial instruments carried at fair value (liability positions):
Other current liabilities, foreign currency forward contracts	(20.5)	(14.3)
Other current liabilities, contingent consideration	0.0	0.0
Other long-term liabilities, foreign currency forward contracts	(0.5)	(0.9)
Contingent consideration	0.0	0.0
Total financial liabilities	(21.0)	(15.2)
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	(14.8)	(14.6)
Other long-term liabilities, foreign currency forward contracts	0.0	0.0
Contingent consideration	(112.3)	(114.4)
Total financial liabilities	(127.1)	(129.0)
Money market funds
Financial instruments carried at fair value (asset positions):
Cash equivalents:	4,954.1	5,162.6
Money market funds \| Level 1
Financial instruments carried at fair value (asset positions):
Cash equivalents:	4,954.1	5,162.6
Money market funds \| Level 2
Financial instruments carried at fair value (asset positions):
Cash equivalents:	0.0	0.0
Money market funds \| Level 3
Financial instruments carried at fair value (asset positions):
Cash equivalents:	0.0	0.0
Time deposits
Financial instruments carried at fair value (asset positions):
Cash equivalents:	1,600.0	2,000.0
Time deposits \| Level 1
Financial instruments carried at fair value (asset positions):
Cash equivalents:	0.0	0.0
Time deposits \| Level 2
Financial instruments carried at fair value (asset positions):
Cash equivalents:	1,600.0	2,000.0
Time deposits \| Level 3
Financial instruments carried at fair value (asset positions):
Cash equivalents:	0.0	0.0
Corporate equity securities
Financial instruments carried at fair value (asset positions):
Marketable securities:	148.1	116.8
Corporate equity securities \| Level 1
Financial instruments carried at fair value (asset positions):
Marketable securities:	127.2	88.8
Corporate equity securities \| Level 2
Financial instruments carried at fair value (asset positions):
Marketable securities:	20.9	28.0
Corporate equity securities \| Level 3
Financial instruments carried at fair value (asset positions):
Marketable securities:	0.0	0.0
U.S. Treasury securities
Financial instruments carried at fair value (asset positions):
Cash equivalents:	86.4	0.0
Marketable securities:	276.6	0.0
U.S. Treasury securities \| Level 1
Financial instruments carried at fair value (asset positions):
Cash equivalents:	86.4	0.0
Marketable securities:	276.6	0.0
U.S. Treasury securities \| Level 2
Financial instruments carried at fair value (asset positions):
Cash equivalents:	0.0	0.0
Marketable securities:	0.0	0.0
U.S. Treasury securities \| Level 3
Financial instruments carried at fair value (asset positions):
Cash equivalents:	0.0	0.0
Marketable securities:	0.0	0.0
Government-sponsored enterprise securities
Financial instruments carried at fair value (asset positions):
Cash equivalents:	129.3	0.0
Marketable securities:	532.4	127.1
Government-sponsored enterprise securities \| Level 1
Financial instruments carried at fair value (asset positions):
Cash equivalents:	129.3	0.0
Marketable securities:	532.4	127.1
Government-sponsored enterprise securities \| Level 2
Financial instruments carried at fair value (asset positions):
Cash equivalents:	0.0	0.0
Marketable securities:	0.0	0.0
Government-sponsored enterprise securities \| Level 3
Financial instruments carried at fair value (asset positions):
Cash equivalents:	0.0	0.0
Marketable securities:	0.0	0.0
Asset-backed securities
Financial instruments carried at fair value (asset positions):
Marketable securities:	117.9	0.0
Asset-backed securities \| Level 1
Financial instruments carried at fair value (asset positions):
Marketable securities:	0.0	0.0
Asset-backed securities \| Level 2
Financial instruments carried at fair value (asset positions):
Marketable securities:	117.9	0.0
Asset-backed securities \| Level 3
Financial instruments carried at fair value (asset positions):
Marketable securities:	0.0	0.0
Certificates of deposit
Financial instruments carried at fair value (asset positions):
Marketable securities:	44.9	0.0
Certificates of deposit \| Level 1
Financial instruments carried at fair value (asset positions):
Marketable securities:	0.0	0.0
Certificates of deposit \| Level 2
Financial instruments carried at fair value (asset positions):
Marketable securities:	44.9	0.0
Certificates of deposit \| Level 3
Financial instruments carried at fair value (asset positions):
Marketable securities:	0.0	0.0
Corporate debt securities
Financial instruments carried at fair value (asset positions):
Cash equivalents:	1.7	5.8
Marketable securities:	771.5	87.0
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
Corporate debt securities \| Level 2
Financial instruments carried at fair value (asset positions):
Cash equivalents:	1.7	5.8
Marketable securities:	771.5	87.0
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
Commercial paper
Financial instruments carried at fair value (asset positions):
Cash equivalents:	408.0	204.5
Marketable securities:	314.3	55.8
Commercial paper \| Level 1
Financial instruments carried at fair value (asset positions):
Cash equivalents:	0.0	0.0
Marketable securities:	0.0	0.0
Commercial paper \| Level 2
Financial instruments carried at fair value (asset positions):
Cash equivalents:	408.0	204.5
Marketable securities:	314.3	55.8
Commercial paper \| Level 3
Financial instruments carried at fair value (asset positions):
Cash equivalents:	0.0	0.0
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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Amount of investment in marketable security.

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