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Property and Equipment - Depreciation, Amortization, Capitalized Interest and Rent Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Abstract]
Depreciation expense	$ 124.2	$ 111.8	$ 102.3
Amortization expense	24.1	22.7	21.8
Interest capitalized	6.0	3.7	2.0
Rent expense:
Minimum rent payments	69.8	66.5	62.6
Contingent and other rents	24.9	24.1	29.4
Other	9.1	8.9	4.0
Total rent expense	$ 103.8	$ 99.5	$ 96.0

X

- Definition

This element represents the payments for executory costs such as insurance, maintenance, and taxes that the lessee is obligated to make or can be required to make (apart from rental payments) in connection with a property under the terms of an agreement classified as an operating lease.

+ References

No definition available.

+ Details

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Namespace Prefix:	ehc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The expense charged against earnings for the periodic recognition of capitalized leases. This element may apply to energy companies that lease mineral producing properties and to other enterprises that capitalize property, plant, or equipment obtained through capital leases.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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Period Type:	duration

X

- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

+ References

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Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of interest capitalized during the period.

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-Publisher FASB
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-SubTopic 20
-Section 50
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X

- References

No definition available.

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- Definition

The increases or decreases in lease payments that result from changes occurring after the inception of the lease in the factors (other than the passage of time) on which lease payments are based, except that any escalation of minimum lease payments relating to increases in construction or acquisition cost of the leased property or for increases in some measure of cost or value during the construction or preconstruction period, are excluded from contingent rentals. Contingent rentals also may include amounts for which the triggering events have not yet occurred or the specified targets for which have not yet been achieved (such as sales based percentage rent), but which events are considered probable of occurring or which specified targets are considered probable of being achieved.

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X

- Definition

This element represents the payments that the lessee is obligated to make or can be required to make in connection with a property under the terms of an agreement classified as an operating lease, excluding contingent rentals and a guarantee by the lessee of the lessor's debt and the lessee's obligation to pay (apart from the rental payments) executory costs such as insurance, maintenance, and taxes.

+ References

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- Definition

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

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X

- References

No definition available.

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