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Long-Term Cash Incentive Plan - Additional Information (Detail) (Long Term Incentive Plan Twenty Thirteen [Member], USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014
Long Term Incentive Plan Twenty Thirteen [Member] |
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] |
Estimated payment of plan including employer cost | $ 5.2 els_EstimatedPaymentsForEmployeeLongTermIncentivePlan / els_IncentiveCompensationPlansEmployeesAxis = els_LongTermIncentivePlanTwentyThirteenMember
Accrued compensation expense | $ 3.8 us-gaap_DeferredCompensationCashbasedArrangementsLiabilityCurrentAndNoncurrent / els_IncentiveCompensationPlansEmployeesAxis = els_LongTermIncentivePlanTwentyThirteenMember

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- Definition Estimated payout of the LTIP plan. + References No definition available. + Details
Name: | els_EstimatedPaymentsForEmployeeLongTermIncentivePlan
Namespace Prefix: | els_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Aggregate carrying value as of the balance sheet date of the liabilities for deferred compensation arrangements. Represents currently earned compensation under cash arrangements (such as a profit-sharing plan, rabbi trust, and employee contract--excluding equity-based arrangements) that is not actually paid until a later date. + References No definition available. + Details
Name: | us-gaap_DeferredCompensationCashbasedArrangementsLiabilityCurrentAndNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant