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entity.","units":{"USD":[{"end":"2009-03-31","val":20383000,"accn":"0001193125-11-151211","fy":2010,"fp":"FY","form":"10-K","filed":"2011-05-26","frame":"CY2009Q1I"},{"end":"2010-03-31","val":3850000,"accn":"0001193125-11-151211","fy":2010,"fp":"FY","form":"10-K","filed":"2011-05-26"},{"end":"2010-03-31","val":3850000,"accn":"0000804212-12-000016","fy":2011,"fp":"FY","form":"10-K","filed":"2012-05-29","frame":"CY2010Q1I"},{"end":"2011-03-31","val":1332000,"accn":"0001193125-11-151211","fy":2010,"fp":"FY","form":"10-K","filed":"2011-05-26"},{"end":"2011-03-31","val":1332000,"accn":"0000804212-13-000015","fy":2012,"fp":"FY","form":"10-K","filed":"2013-05-22","frame":"CY2011Q1I"},{"end":"2011-03-31","val":1332000,"accn":"0000804212-12-000016","fy":2011,"fp":"FY","form":"10-K","filed":"2012-05-29"},{"end":"2011-06-30","val":4253000,"accn":"0001193125-11-214118","fy":2011,"fp":"Q1","form":"10-Q","filed":"2011-08-08","frame":"CY2011Q2I"},{"end":"2011-09-30","val":4469000,"accn":"0001193125-11-302024","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-11-08","frame":"CY2011Q3I"},{"end":"2011-12-31","val":4470000,"accn":"0000804212-12-000005","fy":2011,"fp":"Q3","form":"10-Q","filed":"2012-02-08","frame":"CY2011Q4I"},{"end":"2012-03-31","val":9490000,"accn":"0000804212-13-000015","fy":2012,"fp":"FY","form":"10-K","filed":"2013-05-22","frame":"CY2012Q1I"},{"end":"2012-03-31","val":9490000,"accn":"0000804212-12-000016","fy":2011,"fp":"FY","form":"10-K","filed":"2012-05-29"},{"end":"2012-09-30","val":-1429000,"accn":"0000804212-12-000048","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-11-07","frame":"CY2012Q3I"},{"end":"2012-12-31","val":-4661000,"accn":"0000804212-13-000004","fy":2012,"fp":"Q3","form":"10-Q","filed":"2013-02-08","frame":"CY2012Q4I"},{"end":"2013-03-31","val":4757000,"accn":"0000804212-13-000015","fy":2012,"fp":"FY","form":"10-K","filed":"2013-05-22","frame":"CY2013Q1I"}]}},"BusinessAcquisitionPurchasePriceAllocationNotesPayableAndLongTermDebt":{"label":"Business 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Acquisition, Revenue Reported by Acquired Entity for Last Annual Period","description":"Total revenue reported by the acquired entity for its previous full fiscal year before the business 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period.","units":{"USD":[{"start":"2010-04-01","end":"2010-06-30","val":1066906000,"accn":"0001193125-11-214118","fy":2011,"fp":"Q1","form":"10-Q","filed":"2011-08-08","frame":"CY2010Q2"},{"start":"2010-04-01","end":"2010-09-30","val":2142878000,"accn":"0001193125-11-302024","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-11-08"},{"start":"2011-04-01","end":"2011-06-30","val":1172730000,"accn":"0001193125-11-214118","fy":2011,"fp":"Q1","form":"10-Q","filed":"2011-08-08","frame":"CY2011Q2"},{"start":"2011-04-01","end":"2011-09-30","val":2359853000,"accn":"0001193125-11-302024","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-11-08"}]}},"BusinessCombinationAcquiredReceivablesFairValue":{"label":"Business Combination, Acquired Receivable, Fair Value","description":"Fair value of acquired receivable from business combination, excluding certain loans and debt securities acquired in transfer.","units":{"USD":[{"end":"2010-03-31","val":4200000,"accn":"0001193125-11-151211","fy":2010,"fp":"FY","form":"10-K","filed":"2011-05-26","frame":"CY2010Q1I"}]}},"BusinessCombinationAcquiredReceivablesGrossContractualAmount":{"label":"Business Combination, Acquired Receivables, Gross Contractual Amount","description":"For receivables acquired in a business combination, excluding certain loans and debt securities acquired in a transfer (as defined), this element represents the gross contractual amounts receivable, by major class of receivable, such as loans, direct finance leases (as defined), and any other class of receivables.","units":{"USD":[{"end":"2010-03-31","val":4500000,"accn":"0001193125-11-151211","fy":2010,"fp":"FY","form":"10-K","filed":"2011-05-26","frame":"CY2010Q1I"},{"end":"2011-09-30","val":8200000,"accn":"0001193125-11-302024","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-11-08","frame":"CY2011Q3I"}]}},"BusinessCombinationAcquisitionRelatedCosts":{"label":"Business Combination, Acquisition Related Costs","description":"This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.","units":{"USD":[{"start":"2014-04-01","end":"2014-12-31","val":0,"accn":"0000804212-16-000040","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-02-05"},{"start":"2014-10-01","end":"2014-12-31","val":0,"accn":"0000804212-16-000040","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-02-05","frame":"CY2014Q4"},{"start":"2015-04-01","end":"2015-06-30","val":0,"accn":"0000804212-16-000048","fy":2016,"fp":"FY","form":"10-K","filed":"2016-05-10","frame":"CY2015Q2"},{"start":"2015-07-01","end":"2015-09-30","val":0,"accn":"0000804212-16-000048","fy":2016,"fp":"FY","form":"10-K","filed":"2016-05-10","frame":"CY2015Q3"},{"start":"2015-04-01","end":"2015-12-31","val":21393000,"accn":"0000804212-16-000040","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-02-05"},{"start":"2015-10-01","end":"2015-12-31","val":21393000,"accn":"0000804212-16-000040","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-02-05"},{"start":"2015-10-01","end":"2015-12-31","val":21393000,"accn":"0000804212-16-000048","fy":2016,"fp":"FY","form":"10-K","filed":"2016-05-10","frame":"CY2015Q4"},{"start":"2015-04-01","end":"2016-03-31","val":28967000,"accn":"0000804212-16-000048","fy":2016,"fp":"FY","form":"10-K","filed":"2016-05-10","frame":"CY2015"},{"start":"2016-01-01","end":"2016-03-31","val":7574000,"accn":"0000804212-16-000048","fy":2016,"fp":"FY","form":"10-K","filed":"2016-05-10","frame":"CY2016Q1"}]}},"BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh":{"label":"Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High","description":"For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.","units":{"USD":[{"end":"2011-03-31","val":7900000,"accn":"0001193125-11-151211","fy":2010,"fp":"FY","form":"10-K","filed":"2011-05-26","frame":"CY2011Q1I"},{"end":"2011-06-30","val":7800000,"accn":"0001193125-11-214118","fy":2011,"fp":"Q1","form":"10-Q","filed":"2011-08-08","frame":"CY2011Q2I"},{"end":"2011-09-30","val":7800000,"accn":"0001193125-11-302024","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-11-08","frame":"CY2011Q3I"},{"end":"2011-12-31","val":7500000,"accn":"0000804212-12-000005","fy":2011,"fp":"Q3","form":"10-Q","filed":"2012-02-08","frame":"CY2011Q4I"},{"end":"2012-03-31","val":3700000,"accn":"0000804212-12-000016","fy":2011,"fp":"FY","form":"10-K","filed":"2012-05-29","frame":"CY2012Q1I"},{"end":"2012-06-30","val":2100000,"accn":"0000804212-12-000028","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-08-08","frame":"CY2012Q2I"}]}},"BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual":{"label":"Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual","description":"This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.","units":{"USD":[{"start":"2009-04-01","end":"2010-03-31","val":14000000,"accn":"0001193125-11-151211","fy":2010,"fp":"FY","form":"10-K","filed":"2011-05-26","frame":"CY2009"},{"start":"2010-04-01","end":"2011-03-31","val":7000000,"accn":"0001193125-11-151211","fy":2010,"fp":"FY","form":"10-K","filed":"2011-05-26","frame":"CY2010"},{"start":"2011-04-01","end":"2011-06-30","val":8000000,"accn":"0001193125-11-214118","fy":2011,"fp":"Q1","form":"10-Q","filed":"2011-08-08","frame":"CY2011Q2"},{"start":"2011-04-01","end":"2011-09-30","val":27000000,"accn":"0001193125-11-302024","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-11-08"}]}},"BusinessExitCosts1":{"label":"Business Exit Costs","description":"Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Includes, but is not limited to, one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and termination benefits associated with an ongoing benefit arrangement. Excludes expenses associated with special or contractual termination benefits, a discontinued operation or an asset retirement obligation.","units":{"USD":[{"start":"2012-04-01","end":"2013-03-31","val":-2177000,"accn":"0000804212-15-000014","fy":2015,"fp":"FY","form":"10-K","filed":"2015-05-27","frame":"CY2012"}]}},"CapitalLeaseObligations":{"label":"Capital Lease Obligations","description":"Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.","units":{"USD":[{"end":"2011-03-31","val":0,"accn":"0000804212-12-000016","fy":2011,"fp":"FY","form":"10-K","filed":"2012-05-29","frame":"CY2011Q1I"},{"end":"2012-03-31","val":0,"accn":"0000804212-13-000015","fy":2012,"fp":"FY","form":"10-K","filed":"2013-05-22","frame":"CY2012Q1I"},{"end":"2012-03-31","val":0,"accn":"0000804212-12-000016","fy":2011,"fp":"FY","form":"10-K","filed":"2012-05-29"},{"end":"2013-03-31","val":0,"accn":"0000804212-13-000015","fy":2012,"fp":"FY","form":"10-K","filed":"2013-05-22","frame":"CY2013Q1I"}]}},"Cash":{"label":"Cash","description":"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. Excludes cash and cash equivalents within disposal group and discontinued operation.","units":{"USD":[{"end":"2010-03-31","val":47001000,"accn":"0001193125-10-249784","fy":2010,"fp":"Q2","form":"10-Q","filed":"2010-11-05","frame":"CY2010Q1I"},{"end":"2010-03-31","val":47001000,"accn":"0001193125-10-180609","fy":2010,"fp":"Q1","form":"10-Q","filed":"2010-08-06"},{"end":"2010-06-30","val":57890000,"accn":"0001193125-10-180609","fy":2010,"fp":"Q1","form":"10-Q","filed":"2010-08-06","frame":"CY2010Q2I"},{"end":"2010-09-30","val":53352000,"accn":"0001193125-10-249784","fy":2010,"fp":"Q2","form":"10-Q","filed":"2010-11-05","frame":"CY2010Q3I"}]}},"CashAndCashEquivalentsAtCarryingValue":{"label":"Cash and Cash Equivalents, at Carrying Value","description":"Amount of currency on hand as well as demand deposits with banks or financial institutions. 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