The number of reporting periods that may extend across for multiple delivery dates relating to customer contracts.

No definition available.

Name:	aph_NumberOfReportingPeriodsMultipleDeliveriesDates
Namespace Prefix:	aph_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

This element represents the percentage of consolidated sales that are attributable to the broadband communication market.

+ References

No definition available.

+ Details

Name:	aph_PercentageOfNetSalesAttributableToBroadbandCommunicationMarket
Namespace Prefix:	aph_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage of net sales recognized over time.

+ References

No definition available.

+ Details

Name:	aph_PercentageOfNetSalesRecognizedOverTime
Namespace Prefix:	aph_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Payment terms for contract with customer. Includes, but is not limited to, timing of payment, existence of financing component, variability of consideration and constraint on variable consideration.

+ References

No definition available.

+ Details

Name:	aph_RevenueRecognitionPaymentTerms
Namespace Prefix:	aph_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Period in which nearly all of the remaining performance obligations are expected to be recognized as revenue, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	aph_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriodForNearlyAllPerformanceObligations
Namespace Prefix:	aph_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Period in which a substantial portion of the remaining performance obligations is expected to be recognized as revenue, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	aph_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriodSubstantialPortion
Namespace Prefix:	aph_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

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.

+ References

No definition available.

+ Details

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

- Definition

The cumulative amount of the reporting entity's undistributed earnings or deficit.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(30)(a)(3))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(23)(a)(4))
-URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

+ Details

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

- Definition

Indicates (true false) whether practical expedient was elected to recognize incremental cost of obtaining contract as expense when incurred if amortization period would have been one year or less.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 340
-SubTopic 40
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=68051541&loc=SL51790836-203054

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130569-203045

+ Details

Name:	us-gaap_RevenuePracticalExpedientIncrementalCostOfObtainingContract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:booleanItemType
Balance Type:	na
Period Type:	duration

- Definition

Indicates (true false) whether optional exemption was applied not to disclose amount of transaction price allocated to and explanation of expected timing of revenue recognition for remaining performance obligation, when contract has expected duration of one year or less or right to consideration corresponds directly to performance completed.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130558-203045

+ Details

Name:	us-gaap_RevenuePracticalExpedientRemainingPerformanceObligation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:booleanItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis=us-gaap_DifferenceBetweenRevenueGuidanceInEffectBeforeAndAfterTopic606Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=us-gaap_AccountingStandardsUpdate201409Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Summary of Significant Accounting Policies, Revenue Recognition (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($) item	Dec. 31, 2017	Dec. 31, 2018 USD ($)	Jan. 01, 2018 USD ($)
Revenue recognition
Remaining performance obligation, expected timing for substantial portion of performance obligations	3 months
Practical expedient, performance obligation	true
Practical expedient, incremental cost of obtaining contract	true
Percentage of net sales attributable to broadband communication market (as a percent)		6.00%
Retained earnings	$ 3,348.4		$ 3,028.7
Minimum
Revenue recognition
Payment terms	30 days
Number of reporting periods that may be extended across for multiple delivery dates \| item	1
Maximum
Revenue recognition
Payment terms	120 days
Percentage of net sales recognized over time	5.00%
Remaining performance obligation, expected timing for nearly all performance obligations	1 year
Impact of ASU 2014-09 adoption - Increase (decrease) to beginning retained earnings \| Impact of ASU 2014-09
Revenue recognition
Retained earnings				$ 3.2