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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. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.","units":{"USD":[{"end":"2012-12-31","val":88294000,"accn":"0001193125-14-060768","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-20","frame":"CY2012Q4I"},{"end":"2013-12-31","val":20000000,"accn":"0001193125-14-060768","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-20"},{"end":"2013-12-31","val":20000000,"accn":"0001193125-14-190006","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-08"},{"end":"2013-12-31","val":20000000,"accn":"0001193125-14-295880","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-05"},{"end":"2013-12-31","val":20000000,"accn":"0001193125-14-392012","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-10-31"},{"end":"2013-12-31","val":20000000,"accn":"0001193125-15-064237","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-26","frame":"CY2013Q4I"},{"end":"2014-03-31","val":98000000,"accn":"0001193125-14-190006","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-08","frame":"CY2014Q1I"},{"end":"2014-09-30","val":175000000,"accn":"0001193125-14-392012","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-10-31","frame":"CY2014Q3I"},{"end":"2014-12-31","val":355000000,"accn":"0001193125-15-064237","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-26","frame":"CY2014Q4I"}]}},"LineOfCreditFacilityInterestRateAtPeriodEnd":{"label":"Line of Credit Facility, Interest Rate at Period End","description":"The effective interest rate at the end of the reporting period.","units":{"pure":[{"end":"2013-12-31","val":0.0252,"accn":"0001193125-14-060768","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-20","frame":"CY2013Q4I"},{"end":"2014-03-31","val":0.026,"accn":"0001193125-14-190006","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-08","frame":"CY2014Q1I"}]}},"LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage":{"label":"Line of Credit Facility, Unused Capacity, Commitment Fee Percentage","description":"The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.","units":{"pure":[{"start":"2013-01-01","end":"2013-12-31","val":0.005,"accn":"0001193125-14-060768","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-20","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":0.005,"accn":"0001193125-14-190006","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-08","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":0.005,"accn":"0001193125-14-295880","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-05"},{"start":"2014-01-01","end":"2014-09-30","val":0.005,"accn":"0001193125-14-392012","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-10-31"},{"start":"2014-01-01","end":"2014-12-31","val":0.005,"accn":"0001193125-15-064237","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-26","frame":"CY2014"}]}},"LoansAndLeasesReceivableAllowance":{"label":"Loans and Leases Receivable, Allowance","description":"Amount of allowance to cover probable credit losses on loans and leases. 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Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.","units":{"USD":[{"end":"2011-12-31","val":597700000,"accn":"0001193125-12-355727","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":597700000,"accn":"0001193125-12-470768","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-14"},{"end":"2011-12-31","val":597700000,"accn":"0001193125-13-077176","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-26"},{"end":"2011-12-31","val":597700000,"accn":"0001193125-13-420456","fy":2012,"fp":"FY","form":"8-K","filed":"2013-10-31","frame":"CY2011Q4I"},{"end":"2012-06-30","val":667400000,"accn":"0001193125-12-355727","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":680100000,"accn":"0001193125-12-470768","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-14","frame":"CY2012Q3I"},{"end":"2012-12-31","val":720800000,"accn":"0001193125-13-077176","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-26"},{"end":"2012-12-31","val":720800000,"accn":"0001193125-13-204975","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":720800000,"accn":"0001193125-13-326919","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-08"},{"end":"2012-12-31","val":720800000,"accn":"0001193125-13-420456","fy":2012,"fp":"FY","form":"8-K","filed":"2013-10-31"},{"end":"2012-12-31","val":720800000,"accn":"0001193125-13-432939","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-07"},{"end":"2012-12-31","val":720800000,"accn":"0001193125-14-060768","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-20","frame":"CY2012Q4I"},{"end":"2013-03-31","val":529200000,"accn":"0001193125-13-204975","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":522600000,"accn":"0001193125-13-326919","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-08","frame":"CY2013Q2I"},{"end":"2013-09-30","val":537400000,"accn":"0001193125-13-432939","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-07","frame":"CY2013Q3I"},{"end":"2013-12-31","val":705800000,"accn":"0001193125-14-060768","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-20"},{"end":"2013-12-31","val":705800000,"accn":"0001193125-14-190006","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-08"},{"end":"2013-12-31","val":705800000,"accn":"0001193125-14-295880","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-05"},{"end":"2013-12-31","val":705800000,"accn":"0001193125-14-392012","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-10-31"},{"end":"2013-12-31","val":705800000,"accn":"0001193125-15-064237","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-26","frame":"CY2013Q4I"},{"end":"2014-03-31","val":792600000,"accn":"0001193125-14-190006","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-08","frame":"CY2014Q1I"},{"end":"2014-06-30","val":707000000,"accn":"0001193125-14-295880","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-05","frame":"CY2014Q2I"},{"end":"2014-09-30","val":863600000,"accn":"0001193125-14-392012","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-10-31","frame":"CY2014Q3I"},{"end":"2014-12-31","val":1200000000,"accn":"0001193125-15-064237","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-26","frame":"CY2014Q4I"}]}},"LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive":{"label":"Long-Term Debt, Maturity, after Year Five","description":"Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).","units":{"USD":[{"end":"2012-12-31","val":413354653,"accn":"0001193125-13-077176","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-26"},{"end":"2012-12-31","val":413354653,"accn":"0001193125-13-420456","fy":2012,"fp":"FY","form":"8-K","filed":"2013-10-31","frame":"CY2012Q4I"},{"end":"2013-12-31","val":660367000,"accn":"0001193125-14-060768","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-20","frame":"CY2013Q4I"},{"end":"2014-12-31","val":260165000,"accn":"0001193125-15-064237","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-26","frame":"CY2014Q4I"}]}},"LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths":{"label":"Long-Term Debt, Maturity, Year One","description":"Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).","units":{"USD":[{"end":"2012-12-31","val":4916078,"accn":"0001193125-13-077176","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-26"},{"end":"2012-12-31","val":4916078,"accn":"0001193125-13-420456","fy":2012,"fp":"FY","form":"8-K","filed":"2013-10-31","frame":"CY2012Q4I"},{"end":"2013-12-31","val":157000,"accn":"0001193125-14-060768","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-20","frame":"CY2013Q4I"},{"end":"2014-12-31","val":165000,"accn":"0001193125-15-064237","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-26","frame":"CY2014Q4I"}]}},"LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive":{"label":"Long-Term Debt, Maturity, Year Five","description":"Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fifth fiscal year following current fiscal year. 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