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Gain (Loss) on Marketable Securities and Cost Method Investments, Excluding Other than Temporary Impairments, and Other Investments (Deprecated 2018-01-31)","description":"This item represents the net total realized gain (loss) included in earnings for the period as a result of selling or holding marketable securities categorized as trading, available-for-sale, or held-to-maturity, including the unrealized holding gain or loss of held-to-maturity securities transferred to the trading security category and the cumulative unrealized gain or loss which was included in other comprehensive income (a separate component of shareholders' equity) for available-for-sale securities transferred to trading securities during the period. Additionally, this item would include any gains (losses) realized during the period from the sale of investments accounted for under the cost method of accounting and/or investments that are separately or otherwise not categorized as trading, available-for-sale, or held-to-maturity.","units":{"USD":[{"start":"2008-12-31","end":"2009-12-31","val":-32012418,"accn":"0001193125-12-127834","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-23","frame":"CY2009"},{"start":"2009-12-29","end":"2010-06-30","val":122336042,"accn":"0001193125-11-224683","fy":2011,"fp":"Q2","form":"10-Q/A","filed":"2011-08-17"},{"start":"2010-03-31","end":"2010-06-30","val":33054826,"accn":"0001193125-11-224683","fy":2011,"fp":"Q2","form":"10-Q/A","filed":"2011-08-17","frame":"CY2010Q2"},{"start":"2009-12-30","end":"2010-09-30","val":185008210,"accn":"0001193125-11-310923","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-14"},{"start":"2010-07-01","end":"2010-09-30","val":62672168,"accn":"0001193125-11-310923","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-14","frame":"CY2010Q3"},{"start":"2009-12-31","end":"2010-12-31","val":217821423,"accn":"0001193125-12-127834","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-23","frame":"CY2010"},{"start":"2010-01-01","end":"2010-12-31","val":217821423,"accn":"0001193125-13-112817","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-18"},{"start":"2011-01-01","end":"2011-03-31","val":54641664,"accn":"0001193125-12-234879","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-15","frame":"CY2011Q1"},{"start":"2010-12-29","end":"2011-06-30","val":116059610,"accn":"0001193125-11-224683","fy":2011,"fp":"Q2","form":"10-Q/A","filed":"2011-08-17"},{"start":"2011-01-01","end":"2011-06-30","val":116059610,"accn":"0001193125-12-390521","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-09-13"},{"start":"2011-03-31","end":"2011-06-30","val":61417946,"accn":"0001193125-11-224683","fy":2011,"fp":"Q2","form":"10-Q/A","filed":"2011-08-17","frame":"CY2011Q2"},{"start":"2011-04-01","end":"2011-06-30","val":61417946,"accn":"0001193125-12-390521","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-09-13"},{"start":"2010-12-30","end":"2011-09-30","val":142178310,"accn":"0001193125-11-310923","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-14"},{"start":"2011-01-02","end":"2011-09-30","val":142178310,"accn":"0001193125-12-470688","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-14"},{"start":"2011-07-01","end":"2011-09-30","val":26118700,"accn":"0001193125-12-470688","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-14","frame":"CY2011Q3"},{"start":"2011-07-01","end":"2011-09-30","val":26118700,"accn":"0001193125-11-310923","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-14"},{"start":"2010-12-31","end":"2011-12-31","val":159486478,"accn":"0001193125-12-127834","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-23","frame":"CY2011"},{"start":"2011-01-01","end":"2011-12-31","val":159486478,"accn":"0001193125-13-112817","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-18"},{"start":"2012-01-01","end":"2012-03-31","val":48391891,"accn":"0001193125-13-222211","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-15","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-03-31","val":48391891,"accn":"0001193125-12-234879","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-15"},{"start":"2012-01-01","end":"2012-06-30","val":75661272,"accn":"0001193125-13-334693","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":75661272,"accn":"0001193125-12-390521","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-09-13"},{"start":"2012-04-01","end":"2012-06-30","val":27269381,"accn":"0001193125-13-334693","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-14","frame":"CY2012Q2"},{"start":"2012-04-01","end":"2012-06-30","val":27269381,"accn":"0001193125-12-390521","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-09-13"},{"start":"2012-01-01","end":"2012-09-30","val":109997359,"accn":"0001193125-13-441976","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-14"},{"start":"2012-01-01","end":"2012-09-30","val":109997359,"accn":"0001193125-12-470688","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-14"},{"start":"2012-07-01","end":"2012-09-30","val":34336087,"accn":"0001193125-13-441976","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-14","frame":"CY2012Q3"},{"start":"2012-07-01","end":"2012-09-30","val":34336087,"accn":"0001193125-12-470688","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-14"},{"start":"2012-01-01","end":"2012-12-31","val":149715697,"accn":"0001193125-13-112817","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-18","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":50690349,"accn":"0001193125-13-222211","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-15","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":105058220,"accn":"0001193125-13-334693","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-14"},{"start":"2013-04-01","end":"2013-06-30","val":33195470,"accn":"0001193125-13-334693","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-14","frame":"CY2013Q2"},{"start":"2013-01-01","end":"2013-09-30","val":160275414,"accn":"0001193125-13-441976","fy":2013,"fp":"Q3","form":"10-Q","filed":"20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Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.","units":{"USD":[{"end":"2010-12-31","val":0,"accn":"0001193125-11-224683","fy":2011,"fp":"Q2","form":"10-Q/A","filed":"2011-08-17","frame":"CY2010Q4I"},{"end":"2011-06-30","val":0,"accn":"0001193125-11-224683","fy":2011,"fp":"Q2","form":"10-Q/A","filed":"2011-08-17","frame":"CY2011Q2I"}]}},"SecuritiesFailedToDeliver":{"label":"Securities Failed-to-Deliver","description":"Amount receivable as the result of a fail-to-deliver. 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Includes liabilities not subject to a master netting arrangement and not elected to be 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