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Includes shares issued in an initial public offering or a secondary public offering.","units":{"USD":[{"start":"2011-01-01","end":"2011-12-31","val":20055,"accn":"0001193125-12-512285","fy":2012,"fp":"Q3","form":"10-Q/A","filed":"2012-12-21"},{"start":"2011-01-01","end":"2011-12-31","val":20055,"accn":"0001193125-13-116690","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-20"},{"start":"2011-01-01","end":"2011-12-31","val":20055,"accn":"0001193125-14-102447","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-17","frame":"CY2011"},{"start":"2012-01-01","end":"2012-09-30","val":0,"accn":"0001193125-12-512285","fy":2012,"fp":"Q3","form":"10-Q/A","filed":"2012-12-21"},{"start":"2012-01-01","end":"2012-12-31","val":447910000,"accn":"0001193125-13-116690","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-20"},{"start":"2012-01-01","end":"2012-12-31","val":447910000,"accn":"0001193125-13-213477","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-10"},{"start":"2012-01-01","end":"2012-12-31","val":447910000,"accn":"0001193125-13-323933","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-01-01","end":"2012-12-31","val":447910000,"accn":"0001193125-13-429343","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-01-01","end":"2012-12-31","val":447910000,"accn":"0001193125-14-102447","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-17"},{"start":"2012-01-01","end":"2012-12-31","val":447910000,"accn":"0001193125-15-090996","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-13","frame":"CY2012"}]}},"StockRepurchasedDuringPeriodShares":{"label":"Stock Repurchased During Period, Shares","description":"Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. 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