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Commitments and Contingencies (Details) $ in Millions | Dec. 31, 2017 USD ($)
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Commitments and Contingencies |
Purchase commitments of certain goods and services in 2018 | $ 286.9
Purchase commitments of certain goods and service in 2019 and 2020 | 56.2
Purchase commitments of certain goods and services after 2020 | $ 2.5

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- Definition Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing after the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References No definition available. + Details
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Namespace Prefix: | aph_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the second and third fiscal years following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References No definition available. + Details
Name: | aph_UnrecordedUnconditionalPurchaseObligationDueYearTwoAndThree
Namespace Prefix: | aph_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77896938&loc=d3e25336-109308 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant