Goodwill and Other Intangible Assets, Goodwill (Details) $ in Millions	3 Months Ended
Mar. 31, 2022 USD ($)
Goodwill.
Goodwill, Beginning Balance	$ 6,376.8
Acquisition-related	(1.1)
Foreign currency translation	(26.6)
Goodwill, Ending Balance	6,349.1
Harsh Environment Solutions
Goodwill.
Goodwill, Beginning Balance	1,663.7
Acquisition-related	(1.1)
Foreign currency translation	(5.4)
Goodwill, Ending Balance	1,657.2
Communications Solutions
Goodwill.
Goodwill, Beginning Balance	2,950.1
Acquisition-related	3.4
Foreign currency translation	(9.1)
Goodwill, Ending Balance	2,944.4
Interconnect and Sensor Systems
Goodwill.
Goodwill, Beginning Balance	1,763.0
Acquisition-related	(3.4)
Foreign currency translation	(12.1)
Goodwill, Ending Balance	$ 1,747.5

Acquisition-related change to goodwill balances associated with acquisitions, including, but not limited to, measurement period adjustments made during the period.

No definition available.

+ Details

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Namespace Prefix:	aph_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(10)(1))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=120320667&loc=SL49117168-202975

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 55
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266

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

- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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- Details

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Namespace Prefix:
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Balance Type:
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- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=aph_CommunicationsSolutionsSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Period Type: