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Investments in and Advances to Nonconsolidated Affiliates - Textual (Details)	Dec. 31, 2017 subsidiary
Schedule of Investments [Line Items]
Number of Partially-Owned Subsidiaries	6
Number of General or Limited Partnerships, Limited Liability Companies, or Joint Ventures	5
Minimum [Member]
Schedule of Investments [Line Items]
Affiliates Ownership Percentage	1.00%
Maximum [Member]
Schedule of Investments [Line Items]
Affiliates Ownership Percentage	60.00%

X

- Definition

The percentage of ownership by the Company in the investee accounted for under the equity or cost methods of accounting.

+ References

No definition available.

+ Details

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X

- Definition

Number of general or limited partnerships, limited liability companies, or joint ventures of which the Company has investments.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

X

- Definition

Number of partially owned subsidiaries in which the Company has investments but are not consolidated.

+ References

No definition available.

+ Details

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Namespace Prefix:	ehc_
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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

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X

- Details

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X

- Details

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