XML 80 R64.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Benefit Plans and Other Postretirement Benefits, Fair value measurements of plan assets (Details) - Pension Benefits - USD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | --- | ---
Defined Benefit Plan Disclosure |  |  |
Fair value of pension plan assets | $ 497.9 | $ 439.9 | $ 392.2
U.S. equities — large cap |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of pension plan assets | 141.5 | 118.8 |
U.S. equities — small/mid cap and other |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of pension plan assets | 22.0 | 25.8 |
International equities — growth |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of pension plan assets | 35.6 | 46.5 |
International equities — other |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of pension plan assets | 95.5 | 60.6 |
Alternative investment funds |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of pension plan assets | 12.9 | 12.6 |
U.S. fixed income securities — short term |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of pension plan assets | 6.1 | 6.0 |
U.S. fixed income securities — intermediate term |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of pension plan assets | 61.4 | 58.4 |
U.S. fixed income securities — high yield |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of pension plan assets | 21.9 | 22.2 |
International fixed income securities — other |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of pension plan assets | 47.4 | 43.0 |
Insurance contracts |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of pension plan assets | 37.9 | 34.0 |
Real estate funds |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of pension plan assets | 7.0 |  |
Cash and cash equivalents |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of pension plan assets | 8.7 | 12.0 |
Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of pension plan assets | 207.1 | 212.6 |
Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. equities — large cap |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of pension plan assets | 106.6 | 88.7 |
Quoted Prices in Active Markets for Identical Assets (Level 1) | International equities — growth |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of pension plan assets | 30.4 | 46.5 |
Quoted Prices in Active Markets for Identical Assets (Level 1) | International equities — other |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of pension plan assets |  | 7.0 |
Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. fixed income securities — intermediate term |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of pension plan assets | 61.4 | 58.4 |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Cash and cash equivalents |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of pension plan assets | 8.7 | 12.0 |
Significant Observable Inputs (Level 2) |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of pension plan assets | 172.1 | 155.0 |
Significant Observable Inputs (Level 2) | U.S. equities — large cap |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of pension plan assets | 34.9 | 30.1 |
Significant Observable Inputs (Level 2) | U.S. equities — small/mid cap and other |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of pension plan assets | 22.0 | 25.8 |
Significant Observable Inputs (Level 2) | International equities — growth |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of pension plan assets | 5.2 |  |
Significant Observable Inputs (Level 2) | International equities — other |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of pension plan assets | 40.7 | 33.9 |
Significant Observable Inputs (Level 2) | U.S. fixed income securities — high yield |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of pension plan assets | 21.9 | 22.2 |
Significant Observable Inputs (Level 2) | International fixed income securities — other |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of pension plan assets | 47.4 | 43.0 |
Significant Unobservable Inputs (Level 3) |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of pension plan assets | 44.9 | 34.0 |
Significant Unobservable Inputs (Level 3) | Insurance contracts |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of pension plan assets | 37.9 | 34.0 |
Significant Unobservable Inputs (Level 3) | Real estate funds |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of pension plan assets | 7.0 |  |
Fair Value Measured At Net Asset Value |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of pension plan assets | 73.8 | 38.3 |
Fair Value Measured At Net Asset Value | International equities — other |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of pension plan assets | 54.8 | 19.7 |
Fair Value Measured At Net Asset Value | Alternative investment funds |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of pension plan assets | 12.9 | 12.6 |
Fair Value Measured At Net Asset Value | U.S. fixed income securities — short term |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of pension plan assets | $ 6.1 | $ 6.0 |

X
- 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_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value of assets that have been segregated and restricted to provide pension or postretirement benefits. Assets include, but are not limited to, stocks, bonds, other investments, earnings from investments, and contributions by the employer and employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_PensionPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=aph_USEquitiesLargeCapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=aph_USEquitiesSmallMidCapAndOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=aph_InternationalEquitiesGrowthMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=aph_InternationalEquitiesOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=aph_AlternativeInvestmentFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=aph_USFixedIncomeSecuritiesShortTermMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=aph_USFixedIncomeSecuritiesIntermediateTermMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=aph_USFixedIncomeSecuritiesHighYieldMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=aph_InternationalFixedIncomeSecuritiesOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=aph_InsuranceContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_RealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_CashAndCashEquivalentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=aph_FairValueMeasuredAtNetAssetValuePerShareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |