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EMPLOYEE BENEFIT PLANS - Defined Contribution Plans (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Defined Contribution Plans |  |  |
Matching contributions relating to entity's employees | $ 26.6 | $ 19.9 | $ 17.3
United States defined contribution plan |  |  |
Defined Contribution Plans |  |  |
Maximum contributions of a participant's eligible compensation (as a percent) | 25.00% |  |
Dollar-for-dollar match of employee's annual eligible compensation (as a percent) | 4.00% |  |
Company match of eligible compensation after dollar-for-dollar basis (as a percent) | 2.00% |  |
Company match, second level (as a percent) | 50.00% |  |
Puerto Rico defined contribution plan |  |  |
Defined Contribution Plans |  |  |
Maximum contributions of a participant's eligible compensation (as a percent) | 25.00% |  |
Dollar-for-dollar match of employee's annual eligible compensation (as a percent) | 4.00% |  |
Company match, first level (as a percent) | 50.00% |  |
Profit sharing contribution calculated on eligible earnings (as a percent) | 2.00% |  |
Nonqualified deferred compensation plans |  |  |
Defined Contribution Plans |  |  |
Amount accrued under nonqualified plans | $ 68.5 | $ 64.1 |

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- Definition Represents the percentage of the first level of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
Name: | ew_DefinedContributionPlanEmployerMatchingContributionPercentFirstLevel
Namespace Prefix: | ew_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Percentage employer matches for the first level of the employee's percentage contribution matched. + References No definition available. + Details
Name: | ew_DefinedContributionPlanEmployerMatchingContributionPercentOfMatchFirstLevel
Namespace Prefix: | ew_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage employer matches for the second level of the employee's percentage contribution matched. + References No definition available. + Details
Name: | ew_DefinedContributionPlanEmployerMatchingContributionPercentOfMatchSecondLevel
Namespace Prefix: | ew_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the percentage of the second level of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
Name: | ew_DefinedContributionPlanEmployerMatchingContributionPercentSecondLevel
Namespace Prefix: | ew_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition For a defined contribution plan, the percent of the participant's eligible compensation that the employer will contribute to the profit sharing plan. + References No definition available. + Details
Name: | ew_DefinedContributionPlanProfitSharingContributionRate
Namespace Prefix: | ew_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date. + References No definition available. + Details
Name: | us-gaap_DeferredCompensationLiabilityCurrentAndNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Amount of cost for defined contribution plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
Name: | us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

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- Definition Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_RetirementPlanNameAxis=ew_DefinedContributionPlanUnitedStatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_RetirementPlanNameAxis=ew_DefinedContributionPlanPuertoRicoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_RetirementPlanNameAxis=ew_NonqualifiedDeferredCompensationPlanSelectEmployeeGroupMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |