{"cik":1054905,"taxonomy":"us-gaap","tag":"LongTermDebt","label":"Long-term Debt","description":"Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.","entityName":"INNOSPEC INC.","units":{"USD":[{"end":"2011-12-31","val":35000000,"accn":"0001193125-12-345877","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-09"},{"end":"2011-12-31","val":35000000,"accn":"0001193125-12-445462","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-01"},{"end":"2011-12-31","val":35000000,"accn":"0001193125-13-055257","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-13","frame":"CY2011Q4I"},{"end":"2012-06-30","val":40000000,"accn":"0001193125-12-345877","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-09","frame":"CY2012Q2I"},{"end":"2012-09-30","val":34000000,"accn":"0001193125-12-445462","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-01","frame":"CY2012Q3I"},{"end":"2012-12-31","val":30000000,"accn":"0001193125-13-055257","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-13"},{"end":"2012-12-31","val":30000000,"accn":"0001193125-13-203370","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-07"},{"end":"2012-12-31","val":30000000,"accn":"0001193125-13-326089","fy":2013,"fp":"Q1","form":"10-Q/A","filed":"2013-08-08"},{"end":"2012-12-31","val":30000000,"accn":"0001193125-13-326118","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-08"},{"end":"2012-12-31","val":30000000,"accn":"0001193125-13-429381","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":30000000,"accn":"0001193125-14-050831","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-13","frame":"CY2012Q4I"},{"end":"2013-03-31","val":37000000,"accn":"0001193125-13-203370","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-07"},{"end":"2013-03-31","val":37000000,"accn":"0001193125-13-326089","fy":2013,"fp":"Q1","form":"10-Q/A","filed":"2013-08-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":33000000,"accn":"0001193125-13-326118","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-08","frame":"CY2013Q2I"},{"end":"2013-09-30","val":93000000,"accn":"0001193125-13-429381","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":148000000,"accn":"0001193125-14-050831","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-13"},{"end":"2013-12-31","val":148000000,"accn":"0001193125-14-186766","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":148000000,"accn":"0001193125-14-297612","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":148000000,"accn":"0001193125-14-397840","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":148000000,"accn":"0001564590-15-000732","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-17","frame":"CY2013Q4I"},{"end":"2014-03-31","val":139700000,"accn":"0001193125-14-186766","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":139500000,"accn":"0001193125-14-297612","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":115000000,"accn":"0001193125-14-397840","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":139400000,"accn":"0001564590-15-000732","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-17"},{"end":"2014-12-31","val":139400000,"accn":"0001193125-15-174651","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":139400000,"accn":"0001193125-15-278041","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-05"},{"end":"2014-12-31","val":139400000,"accn":"0001193125-15-365534","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-04"},{"end":"2014-12-31","val":139400000,"accn":"0001193125-16-466575","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-17","frame":"CY2014Q4I"},{"end":"2015-03-31","val":139200000,"accn":"0001193125-15-174651","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":139000000,"accn":"0001193125-15-278041","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-05","frame":"CY2015Q2I"},{"end":"2015-09-30","val":127000000,"accn":"0001193125-15-365534","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-04","frame":"CY2015Q3I"},{"end":"2015-12-31","val":133000000,"accn":"0001193125-16-466575","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-17"},{"end":"2015-12-31","val":131600000,"accn":"0001193125-17-045109","fy":2016,"fp":"FY","form":"10-K","filed":"2017-02-15","frame":"CY2015Q4I"},{"end":"2016-12-31","val":268800000,"accn":"0001193125-17-045109","fy":2016,"fp":"FY","form":"10-K","filed":"2017-02-15"},{"end":"2016-12-31","val":268800000,"accn":"0001193125-17-165304","fy":2017,"fp":"Q1","form":"10-Q","filed":"2017-05-10"},{"end":"2016-12-31","val":268800000,"accn":"0001193125-17-252394","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-08-09"},{"end":"2016-12-31","val":268800000,"accn":"0001193125-17-336771","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-11-08"},{"end":"2016-12-31","val":268800000,"accn":"0001193125-18-047390","fy":2017,"fp":"FY","form":"10-K","filed":"2018-02-15","frame":"CY2016Q4I"},{"end":"2017-03-31","val":239000000,"accn":"0001193125-17-165304","fy":2017,"fp":"Q1","form":"10-Q","filed":"2017-05-10","frame":"CY2017Q1I"},{"end":"2017-06-30","val":249100000,"accn":"0001193125-17-252394","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-08-09","frame":"CY2017Q2I"},{"end":"2017-09-30","val":229300000,"accn":"0001193125-17-336771","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-11-08","frame":"CY2017Q3I"},{"end":"2017-12-31","val":218400000,"accn":"0001193125-18-047390","fy":2017,"fp":"FY","form":"10-K","filed":"2018-02-15"},{"end":"2017-12-31","val":218400000,"accn":"0001193125-18-157041","fy":2018,"fp":"Q1","form":"10-Q","filed":"2018-05-09"},{"end":"2017-12-31","val":218400000,"accn":"0001193125-18-242305","fy":2018,"fp":"Q2","form":"10-Q","filed":"2018-08-08"},{"end":"2017-12-31","val":218400000,"accn":"0001193125-18-320491","fy":2018,"fp":"Q3","form":"10-Q","filed":"2018-11-07"},{"end":"2017-12-31","val":218400000,"accn":"0001193125-19-044946","fy":2018,"fp":"FY","form":"10-K","filed":"2019-02-20","frame":"CY2017Q4I"},{"end":"2018-03-31","val":213600000,"accn":"0001193125-18-157041","fy":2018,"fp":"Q1","form":"10-Q","filed":"2018-05-09","frame":"CY2018Q1I"},{"end":"2018-06-30","val":223800000,"accn":"0001193125-18-242305","fy":2018,"fp":"Q2","form":"10-Q","filed":"2018-08-08","frame":"CY2018Q2I"},{"end":"2018-09-30","val":223900000,"accn":"0001193125-18-320491","fy":2018,"fp":"Q3","form":"10-Q","filed":"2018-11-07","frame":"CY2018Q3I"},{"end":"2018-12-31","val":207600000,"accn":"0001193125-19-044946","fy":2018,"fp":"FY","form":"10-K","filed":"2019-02-20"},{"end":"2018-12-31","val":207600000,"accn":"0001193125-19-140956","fy":2019,"fp":"Q1","form":"10-Q","filed":"2019-05-08"},{"end":"2018-12-31","val":207600000,"accn":"0001193125-19-214188","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-06"},{"end":"2018-12-31","val":207600000,"accn":"0001193125-19-285512","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-06"},{"end":"2018-12-31","val":207600000,"accn":"0001193125-20-041516","fy":2019,"fp":"FY","form":"10-K","filed":"2020-02-19","frame":"CY2018Q4I"},{"end":"2019-03-31","val":207800000,"accn":"0001193125-19-140956","fy":2019,"fp":"Q1","form":"10-Q","filed":"2019-05-08","frame":"CY2019Q1I"},{"end":"2019-06-30","val":158000000,"accn":"0001193125-19-214188","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-06","frame":"CY2019Q2I"},{"end":"2019-09-30","val":131200000,"accn":"0001193125-19-285512","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-06","frame":"CY2019Q3I"},{"end":"2019-12-31","val":58600000,"accn":"0001193125-20-041516","fy":2019,"fp":"FY","form":"10-K","filed":"2020-02-19"},{"end":"2019-12-31","val":58600000,"accn":"0001193125-20-134561","fy":2020,"fp":"Q1","form":"10-Q","filed":"2020-05-06"},{"end":"2019-12-31","val":58600000,"accn":"0001193125-20-210257","fy":2020,"fp":"Q2","form":"10-Q","filed":"2020-08-05"},{"end":"2019-12-31","val":58600000,"accn":"0001193125-20-285409","fy":2020,"fp":"Q3","form":"10-Q","filed":"2020-11-04"},{"end":"2019-12-31","val":58600000,"accn":"0001193125-21-046094","fy":2020,"fp":"FY","form":"10-K","filed":"2021-02-17","frame":"CY2019Q4I"},{"end":"2020-03-31","val":58700000,"accn":"0001193125-20-134561","fy":2020,"fp":"Q1","form":"10-Q","filed":"2020-05-06","frame":"CY2020Q1I"},{"end":"2020-06-30","val":38800000,"accn":"0001193125-20-210257","fy":2020,"fp":"Q2","form":"10-Q","filed":"2020-08-05","frame":"CY2020Q2I"},{"end":"2020-09-30","val":0,"accn":"0001193125-20-285409","fy":2020,"fp":"Q3","form":"10-Q","filed":"2020-11-04","frame":"CY2020Q3I"},{"end":"2020-12-31","val":0,"accn":"0001193125-21-046094","fy":2020,"fp":"FY","form":"10-K","filed":"2021-02-17","frame":"CY2020Q4I"}]}}