XML 73 R62.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Condensed Consolidating Financial Information - Narrative (Details) | Jun. 30, 2018
--- | ---
Condensed Financial Information Disclosure [Abstract] |
Senior secured leverage ratio maximum | 2
Consolidated coverage ratio minimum | 2

X
- Definition Minimum consolidated coverage ratio to permit the declaration and payment of dividends under senior note indenture. + References No definition available. + Details
Name: | ehc_Consolidatedcoverageratiominimum
Namespace Prefix: | ehc_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Max senior secured leverage ratio to permit restricted payments under credit agreement. + References No definition available. + Details
Name: | ehc_DebtInstrumentCovenantLeverageRatioMaximum
Namespace Prefix: | ehc_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
Name: | srt_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract
Namespace Prefix: | srt_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration