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Excludes amount capitalized.","units":{"USD":[{"start":"2013-01-01","end":"2013-09-30","val":5792000,"accn":"0001193125-14-401006","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-06"},{"start":"2013-07-01","end":"2013-09-30","val":1701000,"accn":"0001193125-14-401006","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-06","frame":"CY2013Q3"},{"start":"2014-01-01","end":"2014-09-30","val":5236000,"accn":"0001193125-14-401006","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-06"},{"start":"2014-07-01","end":"2014-09-30","val":1911000,"accn":"0001193125-14-401006","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-06","frame":"CY2014Q3"}]}},"AllowanceForDoubtfulAccountsReceivableCurrent":{"label":"Accounts Receivable, Allowance for Credit Loss, Current","description":"Amount of allowance for credit loss on accounts receivable, classified as 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Alternate captions include noncash interest 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and Cash Equivalents, Period Increase (Decrease)","description":"Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes 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. Includes effect from exchange rate changes.","units":{"USD":[{"start":"2009-01-01","end":"2009-12-31","val":28401000,"accn":"0001193125-12-106687","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-09","frame":"CY2009"},{"start":"2010-01-01","end":"2010-06-30","val":-15717000,"accn":"0001193125-11-212244","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-05"},{"start":"2010-01-01","end":"2010-09-30","val":-1532000,"accn":"0001193125-11-297753","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-04"},{"start":"2010-01-01","end":"2010-12-31","val":-19904000,"accn":"0001193125-12-106687","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-09"},{"start":"2010-01-01","end":"2010-12-31","val":-19904000,"accn":"0001193125-13-098728","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-08","frame":"CY2010"},{"start":"2011-01-01","end":"2011-03-31","val":4520000,"accn":"0001193125-12-212293","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-04","frame":"CY2011Q1"},{"start":"2011-01-01","end":"2011-06-30","val":12511000,"accn":"0001193125-11-212244","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-05"},{"start":"2011-01-01","end":"2011-06-30","val":12511000,"accn":"0001193125-12-337826","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-06"},{"start":"2011-01-01","end":"2011-09-30","val":10145000,"accn":"0001193125-11-297753","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-04"},{"start":"2011-01-01","end":"2011-09-30","val":10145000,"accn":"0001193125-12-457660","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-07"},{"start":"2011-01-01","end":"2011-12-31","val":5490000,"accn":"0001193125-12-106687","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-09"},{"start":"2011-01-01","end":"2011-12-31","val":5490000,"accn":"0001193125-13-098728","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-08"},{"start":"2011-01-01","end":"2011-12-31","val":5490000,"accn":"0001193125-14-088985","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-07","frame":"CY2011"},{"start":"2011-12-30","end":"2012-03-31","val":246000,"accn":"0001193125-13-207365","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-03-31","val":246000,"accn":"0001193125-12-212293","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-04"},{"start":"2011-12-30","end":"2012-06-30","val":2060000,"accn":"0001193125-13-324559","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-01-01","end":"2012-06-30","val":2060000,"accn":"0001193125-12-337826","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-06"},{"start":"2012-01-01","end":"2012-09-30","val":694000,"accn":"0001193125-12-457660","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-07"},{"start":"2012-01-01","end":"2012-09-30","val":694000,"accn":"0001193125-13-435270","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-08"},{"start":"2012-01-01","end":"2012-12-31","val":-1276000,"accn":"0001193125-13-098728","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-08"},{"start":"2012-01-01","end":"2012-12-31","val":-1276000,"accn":"0001193125-14-088985","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-07","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":-1635000,"accn":"0001193125-13-207365","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2013-01-01","end":"2013-03-31","val":-1635000,"accn":"0001193125-14-189961","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-08","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":3401000,"accn":"0001193125-13-324559","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-06-30","val":3401000,"accn":"0001193125-14-300591","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-07"},{"start":"2013-01-01","end":"2013-09-30","val":2719000,"accn":"0001193125-13-435270","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-08"},{"start":"2013-01-01","end":"2013-09-30","val":2719000,"accn":"0001193125-14-401006","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-06"},{"start":"2013-01-01","end":"2013-12-31","val":4267000,"accn":"0001193125-14-088985","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-07","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":-9036000,"accn":"0001193125-14-189961","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-08","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":-12149000,"accn":"0001193125-14-300591","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-07"},{"start":"2014-01-01","end":"2014-09-30","val":-18344000,"accn":"0001193125-14-401006","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-06"}]}},"CashCashEquivalentsAndShortTermInvestments":{"label":"Cash, Cash Equivalents, and Short-term Investments","description":"Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. 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Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. 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