{"cik":"0000781698","entityType":"other","sic":"","sicDescription":"","ownerOrg":null,"insiderTransactionForOwnerExists":0,"insiderTransactionForIssuerExists":0,"name":"DEFINED ASSET FDS GOVT SEC INC FD MON PYMT U S TREAS SER 1","tickers":[],"exchanges":[],"ein":"000000000","lei":null,"description":"","website":"","investorWebsite":"","category":"","fiscalYearEnd":"1231","stateOfIncorporation":"DE","stateOfIncorporationDescription":"DE","addresses":{"mailing":{"street1":null,"street2":null,"city":null,"stateOrCountry":null,"zipCode":null,"stateOrCountryDescription":null,"isForeignLocation":null,"foreignStateTerritory":null,"country":null,"countryCode":null},"business":{"street1":"ONE LIBERTY PLZ 21ST FL 165 BROADWAY","street2":"C/O MERRILL LYNCH PIERCE FENNER & SMITH","city":"NEW YORK","stateOrCountry":"NY","zipCode":"10080","stateOrCountryDescription":"NY","isForeignLocation":null,"foreignStateTerritory":null,"country":null,"countryCode":null}},"phone":null,"flags":"","formerNames":[],"filings":{"recent":{"accessionNumber":["0000950103-05-002012","0000934850-05-000039","0000934850-04-000142","0000934850-03-000198","0000934850-02-000772","0000934850-01-001254","0000934850-01-001074","0000934850-01-001040","0001005477-00-004831","0001005477-00-004681","0000934850-00-000435","0000950112-99-000920","0000950112-99-000900","0000934850-99-000802","0000934850-99-000025","0000950112-98-000802","0000950112-98-000748","0000934850-98-002196","0000934850-98-000778","0000950112-97-000848","0000950112-97-000785","0000934850-97-001111","0000950112-96-002121","0000950112-96-001956","0000000003-96-000076","0000950112-95-001735","0000950112-95-001638","0000950103-95-000119","0000934850-95-002752","0000950112-94-001843","0000950112-94-001777","0000950103-94-001337"],"filingDate":["2005-09-21","2005-03-31","2004-03-31","2003-03-27","2002-03-21","2001-04-03","2001-03-22","2001-03-21","2000-06-23","2000-06-14","2000-03-10","1999-07-14","1999-06-30","1999-03-11","1999-01-22","1998-06-26","1998-06-17","1998-03-10","1998-03-03","1997-06-23","1997-06-11","1997-02-20","1996-06-24","1996-06-12","1996-02-14","1995-06-26","1995-06-14","1995-04-07","1995-02-17","1994-07-05","1994-06-27","1994-02-23"],"reportDate":["2005-08-31","2004-12-31","2003-12-31","2002-12-31","2001-12-31","","2000-12-31","","","","1999-12-31","","","1998-12-31","","","","1997-12-31","1997-12-31","","","1996-12-31","","","1995-12-31","","","","1994-12-31","","","1993-12-31"],"acceptanceDateTime":["2005-09-21T19:31:09.000Z","2005-03-31T19:40:38.000Z","2004-03-31T19:16:37.000Z","2003-03-27T22:08:29.000Z","2002-03-21T05:00:00.000Z","2001-04-03T04:00:00.000Z","2001-03-22T05:00:00.000Z","2001-03-21T05:00:00.000Z","2000-06-23T04:00:00.000Z","2000-06-14T04:00:00.000Z","2000-03-10T05:00:00.000Z","1999-07-14T04:00:00.000Z","1999-06-30T04:00:00.000Z","1999-03-11T05:00:00.000Z","1999-01-22T05:00:00.000Z","1998-06-26T04:00:00.000Z","1998-06-17T04:00:00.000Z","1998-03-10T05:00:00.000Z","1998-03-03T05:00:00.000Z","1997-06-23T04:00:00.000Z","1997-06-11T04:00:00.000Z","1997-02-20T05:00:00.000Z","1996-06-24T04:00:00.000Z","1996-06-12T04:00:00.000Z","1996-02-14T05:00:00.000Z","1995-06-26T04:00:00.000Z","1995-06-14T04:00:00.000Z","1995-04-07T04:00:00.000Z","1995-02-17T05:00:00.000Z","1994-07-05T04:00:00.000Z","1994-06-27T04:00:00.000Z","1994-02-23T05:00:00.000Z"],"act":["33","33","","","","","","","","","","","","","","","","","","","","","","","","","","","","","",""],"form":["24F-2NT","24F-2NT","24F-2NT","24F-2NT","24F-2NT","497","24F-2NT","497","497","485BPOS","24F-2NT","497","485BPOS","24F-2NT","497","497","485BPOS","24F-2NT/A","24F-2NT","497","485BPOS","24F-2NT","497","485BPOS","24F-2NT","497","485BPOS","497","24F-2NT","497","485BPOS","24F-2NT"],"fileNumber":["002-81969","002-81969","002-81969","002-81969","002-81969","002-81969","002-81969","002-81969","002-81969","002-81969","002-81969","002-81969","002-81969","002-81969","002-81969","002-81969","002-81969","002-81969","002-81969","002-81969","002-81969","002-81969","002-81969","002-81969","002-81969","002-81969","002-81969","002-81969","002-81969","002-81969","002-81969","002-81969"],"filmNumber":["051095734","05719128","04705267","03621724","02580642","1594297","1576123","1574840","659926","654858","566005","99663829","99656623","99562892","99510746","98655213","98649573","98562869","98555590","97628062","97622520","97540090","96584452","96580017","96520063","95549144","95547060","95527709","95512919","94537748","94535904","94511691"],"items":["","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","",""],"core_type":["24F-2NT","24F-2NT","24F-2NT","24F-2NT","24F-2NT","497","24F-2NT","497","497","485BPOS","24F-2NT","497","485BPOS","24F-2NT","497","497","485BPOS","24F-2NT/A","24F-2NT","497","485BPOS","24F-2NT","497","485BPOS","24F-2NT","497","485BPOS","497","24F-2NT","497","485BPOS","24F-2NT"],"size":[6124,5891,5839,5841,5787,203401,5843,389534,54585,71236,5770,54321,67670,5613,394032,120947,145966,5795,5712,135674,158721,7473,127931,149312,5725,249886,274674,2689,5731,252261,274580,5614],"isXBRL":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"isInlineXBRL":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"isXBRLNumeric":[null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null],"primaryDocument":["gsif_mpusts1.txt","daf_gnma-serk.txt","cik781698.txt","ml036.txt","a022.txt","0001.txt","0001.txt","0001.txt","0001.txt","0001.txt","","","","","","","","","","","","","","","","","","","","","",""],"primaryDocDescription":["","","","","","","","","DAF-GSIF MPUSTS-1","DAF-GSIF MPUSTS-1","","DAF-GSIF MPUSTS-1","DAF-GSIF MPUSTS-1","","","DAF-GSIF MPUSTS-1               GSIF-B","DAF-GSIF MPUSTS-1                   GSIF-B","","","DAF-GSIF MPUSTS-1               GSIF-B","DAF-GSIF MPUSTS-1                   GSIF-B","","DAF-GSIF MPUSTS-1               GSIF-B","DAF-GSIF MPUSTS-1                   GSIF-B","","DAF-GSIF MPUSTS-1               GSIF-B","DAF-GSIF MPUSTS-1                   GSIF-B","SUPPLEMENT TO PROSPECTUS","","DAF-GSIF MPUSTS-1               GSIF-B","DAF-GSIF MPUSTS-1                   GSIF-B",""]},"files":[]}}