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Leases - Textuals (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019 USD ($)
Lessee, Lease, Description [Line Items]
Finance lease right-of-use asset accumulated depreciation	$ 95.6
Minimum [Member]
Lessee, Lease, Description [Line Items]
Operating and finance lease contract term	1 year
Maximum [Member]
Lessee, Lease, Description [Line Items]
Operating and finance lease contract term	25 years

X

- Definition

Finance lease right-of-use asset accumulated depreciation

+ References

No definition available.

+ Details

Name:	ehc_Financeleaserightofuseassetaccumulateddepreciation
Namespace Prefix:	ehc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Term of lessee's operating and finance leases, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	ehc_Operatingandfinanceleasecontractterm
Namespace Prefix:	ehc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

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

X

- Details

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

X

- Details

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