{"cik":931182,"taxonomy":"us-gaap","tag":"EarningsPerShareBasic","label":"Earnings Per Share, Basic","description":"The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.","entityName":"ERP OPERATING LTD PARTNERSHIP","units":{"USD/shares":[{"start":"2014-01-01","end":"2014-03-31","val":0.217,"accn":"0000906107-15-000012","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":0.53,"accn":"0000906107-15-000016","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-06"},{"start":"2014-04-01","end":"2014-06-30","val":0.31,"accn":"0000906107-15-000016","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-06","frame":"CY2014Q2"},{"start":"2015-01-01","end":"2015-03-31","val":0.493,"accn":"0000906107-15-000012","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":1.28,"accn":"0000906107-15-000016","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-06"},{"start":"2015-04-01","end":"2015-06-30","val":0.79,"accn":"0000906107-15-000016","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-06","frame":"CY2015Q2"}]}}