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This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' 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-Term 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Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. Includes current cash equivalents and investments that are similarly restricted as to withdrawal, usage or disposal.","units":{"USD":[{"end":"2012-12-31","val":323000,"accn":"0001193125-14-062525","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-21","frame":"CY2012Q4I"},{"end":"2013-12-31","val":5350000,"accn":"0001193125-14-062525","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-21"},{"end":"2013-12-31","val":5350000,"accn":"0001193125-14-170555","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-04-30"},{"end":"2013-12-31","val":5350000,"accn":"0001193125-14-278761","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-07-24"},{"end":"2013-12-31","val":5350000,"accn":"0001193125-14-385003","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-10-28"},{"end":"2013-12-31","val":5350000,"accn":"0001193125-15-052166","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-17","frame":"CY2013Q4I"},{"end":"2014-03-31","val":5684000,"accn":"0001193125-14-170555","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-04-30","frame":"CY2014Q1I"},{"end":"2014-06-30","val":5973000,"accn":"0001193125-14-278761","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-07-24","frame":"CY2014Q2I"},{"end":"2014-09-30","val":923000,"accn":"0001193125-14-385003","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-10-28","frame":"CY2014Q3I"},{"end":"2014-12-31","val":884000,"accn":"0001193125-15-052166","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-17"},{"end":"2014-12-31","val":884000,"accn":"0001193125-15-265790","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-07-28"},{"end":"2014-12-31","val":884000,"accn":"0001193125-15-354644","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-10-27"},{"end":"2014-12-31","val":884000,"accn":"0001193125-16-465362","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-16","frame":"CY2014Q4I"},{"end":"2015-06-30","val":869000,"accn":"0001193125-15-265790","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-07-28","frame":"CY2015Q2I"},{"end":"2015-09-30","val":848000,"accn":"0001193125-15-354644","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-10-27","frame":"CY2015Q3I"},{"end":"2015-12-31","val":830000,"accn":"0001193125-16-465362","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-16"},{"end":"2015-12-31","val":830000,"accn":"0001193125-16-567461","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-04-29"},{"end":"2015-12-31","val":830000,"accn":"0001193125-16-658081","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-07-26","frame":"CY2015Q4I"},{"end":"2016-03-31","val":812000,"accn":"0001193125-16-567461","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-04-29","frame":"CY2016Q1I"},{"end":"2016-06-30","val":753000,"accn":"0001193125-16-658081","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-07-26","frame":"CY2016Q2I"}]}},"RestrictedCashAndInvestmentsNoncurrent":{"label":"Restricted Cash and Investments, Noncurrent","description":"The noncurrent cash, cash equivalents and investments that is restricted as to withdrawal or usage. 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Includes noncurrent cash equivalents and investments that are similarly restricted as to withdrawal, usage or 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Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. 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