Fair Value Measurements - Financial Assets and Liabilities Subject to Fair Value Measurements (Details) - Recurring Basis - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Financial instruments carried at fair value (asset positions):
Derivative asset current, foreign currency forward contracts	$ 6.8	$ 47.5
Other assets, foreign currency forward contracts	0.1	0.8
Total financial assets	8,360.7	7,807.9
Financial instruments carried at fair value (liability positions):
Other current liabilities, foreign currency forward contracts	(26.5)	(14.3)
Other current liabilities, contingent consideration	(15.0)	(14.6)
Other long-term liabilities, foreign currency forward contracts	(1.1)	(0.9)
Contingent consideration	(111.5)	(114.4)
Total financial liabilities	(154.1)	(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	4,473.6	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	6.8	47.5
Other assets, foreign currency forward contracts	0.1	0.8
Total financial assets	3,887.1	2,429.4
Financial instruments carried at fair value (liability positions):
Other current liabilities, foreign currency forward contracts	(26.5)	(14.3)
Other current liabilities, contingent consideration	0.0	0.0
Other long-term liabilities, foreign currency forward contracts	(1.1)	(0.9)
Contingent consideration	0.0	0.0
Total financial liabilities	(27.6)	(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	(15.0)	(14.6)
Other long-term liabilities, foreign currency forward contracts	0.0	0.0
Contingent consideration	(111.5)	(114.4)
Total financial liabilities	(126.5)	(129.0)
Money market funds
Financial instruments carried at fair value (asset positions):
Cash equivalents:	3,474.5	5,162.6
Money market funds \| Level 1
Financial instruments carried at fair value (asset positions):
Cash equivalents:	3,474.5	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:	2,000.0	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:	2,000.0	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:	52.6	116.8
Corporate equity securities \| Level 1
Financial instruments carried at fair value (asset positions):
Marketable securities:	29.3	88.8
Corporate equity securities \| Level 2
Financial instruments carried at fair value (asset positions):
Marketable securities:	23.3	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:	133.3	0.0
Marketable securities:	336.5	0.0
U.S. Treasury securities \| Level 1
Financial instruments carried at fair value (asset positions):
Cash equivalents:	133.3	0.0
Marketable securities:	336.5	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):
Marketable securities:	500.0	127.1
Government-sponsored enterprise securities \| Level 1
Financial instruments carried at fair value (asset positions):
Marketable securities:	500.0	127.1
Government-sponsored enterprise securities \| Level 2
Financial instruments carried at fair value (asset positions):
Marketable securities:	0.0	0.0
Government-sponsored enterprise securities \| Level 3
Financial instruments carried at fair value (asset positions):
Marketable securities:	0.0	0.0
Asset-backed securities
Financial instruments carried at fair value (asset positions):
Marketable securities:	169.4	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:	169.4	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:	40.2	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:	40.2	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:	5.0	5.8
Marketable securities:	985.3	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:	5.0	5.8
Marketable securities:	985.3	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:	298.5	204.5
Marketable securities:	358.5	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:	298.5	204.5
Marketable securities:	358.5	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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

+ Details

Name:	us-gaap_AssetsFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

+ Details

Name:	us-gaap_AssetsFairValueDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled within one year or the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 25
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479668/805-30-25-6

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 35
-Paragraph 1
-Subparagraph b
-SubTopic 30
-Topic 805
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479613/805-30-35-1

+ Details

Name:	us-gaap_BusinessCombinationContingentConsiderationLiabilityCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled beyond one year or the normal operating cycle, if longer.

+ References

+ Details

Name:	us-gaap_BusinessCombinationContingentConsiderationLiabilityNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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.

+ References

No definition available.

+ Details

Name:	us-gaap_CashAndCashEquivalentsFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483466/210-20-50-3

+ Details

Name:	us-gaap_DerivativeAssetsCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References

+ Details

Name:	us-gaap_DerivativeAssetsNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References

+ Details

Name:	us-gaap_DerivativeLiabilitiesCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References

+ Details

Name:	us-gaap_DerivativeLiabilitiesNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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.

+ References

No definition available.

+ Details

Name:	us-gaap_FinancialLiabilitiesFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

Name:	us-gaap_LiabilitiesFairValueDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of investment in marketable security.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(2))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.4)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1

+ Details

Name:	us-gaap_MarketableSecurities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_MoneyMarketFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_BankTimeDepositsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_EquitySecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_USTreasurySecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_AssetBackedSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_CertificatesOfDepositMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_CommercialPaperMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: