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Subsequent Event - Narrative (Details) - CAS Medical Systems, Inc. - Subsequent Event $ / shares in Units, $ in Millions | Feb. 11, 2019 USD ($) $ / shares
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Subsequent Event [Line Items] |
Consideration to be transferred (in dollars per share) | $ / shares | $ 2.45
Purchase price subject to certain adjustments | $ | $ 100.0

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- Definition Business Combination, Consideration To Be Transferred + References No definition available. + Details
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Namespace Prefix: | ew_
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Balance Type: | credit
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- Definition Business Combination, Consideration To Be Transferred, Price Per Common Share + References No definition available. + Details
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Namespace Prefix: | ew_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + 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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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Data Type: | na
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