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Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock.","units":{"USD":[{"end":"2011-12-31","val":170289000,"accn":"0001193125-12-225839","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-10"},{"end":"2011-12-31","val":170289000,"accn":"0001193125-12-349516","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-10"},{"end":"2011-12-31","val":170289000,"accn":"0001193125-12-467494","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-13"},{"end":"2011-12-31","val":170289000,"accn":"0001193125-13-107109","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-14","frame":"CY2011Q4I"},{"end":"2012-03-31","val":239764000,"accn":"0001193125-12-225839","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-10","frame":"CY2012Q1I"},{"end":"2012-06-30","val":240695000,"accn":"0001193125-12-349516","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-10","frame":"CY2012Q2I"},{"end":"2012-09-30","val":242326000,"accn":"0001193125-12-467494","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-13","frame":"CY2012Q3I"},{"end":"2012-12-31","val":244513000,"accn":"0001193125-13-107109","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-14"},{"end":"2012-12-31","val":244513000,"accn":"0001193125-13-218785","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-14"},{"end":"2012-12-31","val":244513000,"accn":"0001193125-13-332554","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-13"},{"end":"2012-12-31","val":244513000,"accn":"0001193125-13-437797","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-12"},{"end":"2012-12-31","val":244513000,"accn":"0001193125-14-099600","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-14","frame":"CY2012Q4I"},{"end":"2013-03-31","val":247653000,"accn":"0001193125-13-218785","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-14","frame":"CY2013Q1I"},{"end":"2013-06-30","val":314576000,"accn":"0001193125-13-332554","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-13","frame":"CY2013Q2I"},{"end":"2013-09-30","val":316467000,"accn":"0001193125-13-437797","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-12","frame":"CY2013Q3I"},{"end":"2013-12-31","val":318103000,"accn":"0001193125-14-099600","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-14"},{"end":"2013-12-31","val":318103000,"accn":"0001193125-14-192166","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-09"},{"end":"2013-12-31","val":318103000,"accn":"0001193125-14-302705","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-08"},{"end":"2013-12-31","val":318103000,"accn":"0001193125-14-400611","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-06"},{"end":"2013-12-31","val":318103000,"accn":"0001193125-15-090602","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-13","frame":"CY2013Q4I"},{"end":"2014-03-31","val":321499000,"accn":"0001193125-14-192166","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-09","frame":"CY2014Q1I"},{"end":"2014-06-30","val":324040000,"accn":"0001193125-14-302705","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-08","frame":"CY2014Q2I"},{"end":"2014-09-30","val":326095000,"accn":"0001193125-14-400611","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-06","frame":"CY2014Q3I"},{"end":"2014-12-31","val":328440000,"accn":"0001193125-15-090602","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-13","frame":"CY2014Q4I"}]}},"AdditionalPaidInCapitalCommonStock":{"label":"Additional Paid in Capital, Common Stock","description":"Value received from shareholders in common stock-related transactions that are in excess of par value or stated value and amounts received from other stock-related transactions. 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