{"cik":"0001307481","entityType":"operating","sic":"6189","sicDescription":"Asset-Backed Securities","ownerOrg":null,"insiderTransactionForOwnerExists":0,"insiderTransactionForIssuerExists":0,"name":"Structured Asset Securities Corp Mortgage Pass-Through Certificates, Series 2004-20","tickers":[],"exchanges":[],"ein":null,"lei":null,"description":"","website":"","investorWebsite":"","category":"","fiscalYearEnd":"1231","stateOfIncorporation":"DE","stateOfIncorporationDescription":"DE","addresses":{"mailing":{"street1":"3 WORLD FINANCIAL CENTER","street2":null,"city":"NEW YORK","stateOrCountry":"NY","zipCode":"10285","stateOrCountryDescription":"NY","isForeignLocation":null,"foreignStateTerritory":null,"country":null,"countryCode":null},"business":{"street1":"3 WORLD FINANCIAL CENTER","street2":null,"city":"NEW YORK","stateOrCountry":"NY","zipCode":"10285","stateOrCountryDescription":"NY","isForeignLocation":null,"foreignStateTerritory":null,"country":null,"countryCode":null}},"phone":"2125267000","flags":"","formerNames":[],"filings":{"recent":{"accessionNumber":["0001136999-05-000162","0001136999-05-000061","0001136999-04-000614","0001136999-04-000542","0001162318-04-000743","0000950136-04-003642"],"filingDate":["2005-03-30","2005-01-24","2004-12-29","2004-12-01","2004-11-12","2004-11-01"],"reportDate":["2005-03-01","","2004-12-27","2004-11-26","2004-10-29",""],"acceptanceDateTime":["2005-03-30T17:25:55.000Z","2005-01-24T20:48:47.000Z","2004-12-29T21:34:24.000Z","2004-12-01T20:52:46.000Z","2004-11-12T20:06:32.000Z","2004-11-01T15:39:31.000Z"],"act":["34","34","34","34","34","33"],"form":["10-K","15-15D","8-K","8-K","8-K","424B5"],"fileNumber":["333-115858-28","333-115858-28","333-115858-28","333-115858-28","333-115858-28","333-115858-28"],"filmNumber":["05712696","05544428","041231482","041177519","041138669","041108573"],"items":["","","9.01","9.01","8.01",""],"core_type":["10-K","15-15D","8-K","8-K","8-K","424B5"],"size":[157025,5847,498629,223865,1381232,1112728],"isXBRL":[0,0,0,0,0,0],"isInlineXBRL":[0,0,0,0,0,0],"isXBRLNumeric":[null,null,null,null,null,null],"primaryDocument":["sasc0420_10k.htm","sasc0420_form15.htm","sasc0420_200412.htm","sasc0420_200411.htm","m121896v2.htm","file001.htm"],"primaryDocDescription":["FORM 10K","NOTICE OF SUSPENSION OF DUTY TO FILE REPORTS","MONTHLY DISTRIBUTION STATEMENT","MONTHLY DISTRIBUTION STATEMENT","FORM 8-K","DEFINITIVE MATERIALS"]},"files":[]}}