{"cik":1552000,"taxonomy":"us-gaap","tag":"IncreaseDecreaseInAccountsReceivable","label":"Increase (Decrease) in Accounts Receivable","description":"The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services.","entityName":"MPLX LP","units":{"USD":[{"start":"2013-01-01","end":"2013-03-31","val":-3600000,"accn":"0001193125-13-210996","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-09"},{"start":"2013-01-01","end":"2013-03-31","val":-3600000,"accn":"0001552000-14-000009","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-05","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":-4800000,"accn":"0001193125-13-326097","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-08"},{"start":"2013-01-01","end":"2013-06-30","val":-4800000,"accn":"0001552000-14-000020","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-04"},{"start":"2013-01-01","end":"2013-09-30","val":-3300000,"accn":"0001552000-13-000003","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-07"},{"start":"2013-01-01","end":"2013-09-30","val":-3300000,"accn":"0001552000-14-000027","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-03"},{"start":"2013-01-01","end":"2013-12-31","val":-5400000,"accn":"0001552000-14-000004","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-28"},{"start":"2013-01-01","end":"2013-12-31","val":-5400000,"accn":"0001552000-15-000006","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-27"},{"start":"2013-01-01","end":"2013-12-31","val":-5000000,"accn":"0001552000-16-000136","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-26"},{"start":"2013-01-01","end":"2013-12-31","val":-6000000,"accn":"0001552000-16-000163","fy":2015,"fp":"FY","form":"8-K","filed":"2016-05-02"},{"start":"2013-01-01","end":"2013-12-31","val":-6000000,"accn":"0001552000-16-000176","fy":2015,"fp":"FY","form":"8-K","filed":"2016-05-20","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":0,"accn":"0001552000-14-000009","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-05"},{"start":"2014-01-01","end":"2014-03-31","val":0,"accn":"0001552000-15-000014","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-04","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":-1300000,"accn":"0001552000-14-000020","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-04"},{"start":"2014-01-01","end":"2014-06-30","val":-1300000,"accn":"0001552000-15-000041","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-03"},{"start":"2014-01-01","end":"2014-09-30","val":-3300000,"accn":"0001552000-14-000027","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-03"},{"start":"2014-01-01","end":"2014-09-30","val":-3300000,"accn":"0001552000-15-000065","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-02"},{"start":"2014-01-01","end":"2014-12-31","val":-2000000,"accn":"0001552000-15-000006","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-27"},{"start":"2014-01-01","end":"2014-12-31","val":-2000000,"accn":"0001552000-16-000136","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-26"},{"start":"2014-01-01","end":"2014-12-31","val":-2000000,"accn":"0001552000-16-000163","fy":2015,"fp":"FY","form":"8-K","filed":"2016-05-02"},{"start":"2014-01-01","end":"2014-12-31","val":-2000000,"accn":"0001552000-16-000176","fy":2015,"fp":"FY","form":"8-K","filed":"2016-05-20"},{"start":"2014-01-01","end":"2014-12-31","val":-2000000,"accn":"0001552000-17-000012","fy":2016,"fp":"FY","form":"10-K","filed":"2017-02-24"},{"start":"2014-01-01","end":"2014-12-31","val":-2000000,"accn":"0001552000-17-000029","fy":2016,"fp":"FY","form":"8-K","filed":"2017-05-01","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":-1600000,"accn":"0001552000-15-000014","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-04"},{"start":"2015-01-01","end":"2015-03-31","val":-2000000,"accn":"0001552000-16-000161","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-05-02","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":2400000,"accn":"0001552000-15-000041","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-03"},{"start":"2015-01-01","end":"2015-06-30","val":2000000,"accn":"0001552000-16-000200","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-08-03"},{"start":"2015-01-01","end":"2015-09-30","val":1600000,"accn":"0001552000-15-000065","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-02"},{"start":"2015-01-01","end":"2015-09-30","val":2000000,"accn":"0001552000-16-000227","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-10-31"},{"start":"2015-01-01","end":"2015-12-31","val":29000000,"accn":"0001552000-16-000136","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-26"},{"start":"2015-01-01","end":"2015-12-31","val":29000000,"accn":"0001552000-16-000163","fy":2015,"fp":"FY","form":"8-K","filed":"2016-05-02"},{"start":"2015-01-01","end":"2015-12-31","val":29000000,"accn":"0001552000-16-000176","fy":2015,"fp":"FY","form":"8-K","filed":"2016-05-20"},{"start":"2015-01-01","end":"2015-12-31","val":29000000,"accn":"0001552000-17-000012","fy":2016,"fp":"FY","form":"10-K","filed":"2017-02-24"},{"start":"2015-01-01","end":"2015-12-31","val":29000000,"accn":"0001552000-17-000029","fy":2016,"fp":"FY","form":"8-K","filed":"2017-05-01"},{"start":"2015-01-01","end":"2015-12-31","val":29000000,"accn":"0001552000-18-000020","fy":2017,"fp":"FY","form":"10-K","filed":"2018-02-28","frame":"CY2015"},{"start":"2016-01-01","end":"2016-03-31","val":5000000,"accn":"0001552000-16-000161","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-05-02"},{"start":"2016-01-01","end":"2016-03-31","val":5000000,"accn":"0001552000-17-000027","fy":2017,"fp":"Q1","form":"10-Q","filed":"2017-05-01","frame":"CY2016Q1"},{"start":"2016-01-01","end":"2016-06-30","val":20000000,"accn":"0001552000-16-000200","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-08-03"},{"start":"2016-01-01","end":"2016-06-30","val":20000000,"accn":"0001552000-17-000047","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-08-03"},{"start":"2016-01-01","end":"2016-09-30","val":44000000,"accn":"0001552000-16-000227","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-10-31"},{"start":"2016-01-01","end":"2016-09-30","val":43000000,"accn":"0001552000-17-000080","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-10-30"},{"start":"2016-01-01","end":"2016-12-31","val":52000000,"accn":"0001552000-17-000012","fy":2016,"fp":"FY","form":"10-K","filed":"2017-02-24"},{"start":"2016-01-01","end":"2016-12-31","val":52000000,"accn":"0001552000-17-000029","fy":2016,"fp":"FY","form":"8-K","filed":"2017-05-01"},{"start":"2016-01-01","end":"2016-12-31","val":52000000,"accn":"0001552000-18-000020","fy":2017,"fp":"FY","form":"10-K","filed":"2018-02-28"},{"start":"2016-01-01","end":"2016-12-31","val":52000000,"accn":"0001552000-19-000006","fy":2018,"fp":"FY","form":"10-K","filed":"2019-02-28","frame":"CY2016"},{"start":"2017-01-01","end":"2017-03-31","val":-44000000,"accn":"0001552000-17-000027","fy":2017,"fp":"Q1","form":"10-Q","filed":"2017-05-01"},{"start":"2017-01-01","end":"2017-03-31","val":-44000000,"accn":"0001552000-18-000039","fy":2018,"fp":"Q1","form":"10-Q","filed":"2018-04-30","frame":"CY2017Q1"},{"start":"2017-01-01","end":"2017-06-30","val":-17000000,"accn":"0001552000-17-000047","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-08-03"},{"start":"2017-01-01","end":"2017-06-30","val":-17000000,"accn":"0001552000-18-000046","fy":2018,"fp":"Q1","form":"10-Q","filed":"2018-08-06"},{"start":"2017-01-01","end":"2017-09-30","val":20000000,"accn":"0001552000-17-000080","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-10-30"},{"start":"2017-01-01","end":"2017-09-30","val":20000000,"accn":"0001552000-18-000052","fy":2018,"fp":"Q3","form":"10-Q","filed":"2018-11-05"},{"start":"2017-01-01","end":"2017-12-31","val":-8000000,"accn":"0001552000-18-000020","fy":2017,"fp":"FY","form":"10-K","filed":"2018-02-28"},{"start":"2017-01-01","end":"2017-12-31","val":-8000000,"accn":"0001552000-19-000006","fy":2018,"fp":"FY","form":"10-K","filed":"2019-02-28"},{"start":"2017-01-01","end":"2017-12-31","val":-8000000,"accn":"0001552000-20-000007","fy":2019,"fp":"FY","form":"10-K","filed":"2020-02-28","frame":"CY2017"},{"start":"2018-01-01","end":"2018-03-31","val":8000000,"accn":"0001552000-18-000039","fy":2018,"fp":"Q1","form":"10-Q","filed":"2018-04-30"},{"start":"2018-01-01","end":"2018-03-31","val":8000000,"accn":"0001552000-19-000030","fy":2019,"fp":"Q1","form":"10-Q","filed":"2019-05-09","frame":"CY2018Q1"},{"start":"2018-01-01","end":"2018-06-30","val":71000000,"accn":"0001552000-18-000046","fy":2018,"fp":"Q1","form":"10-Q","filed":"2018-08-06"},{"start":"2018-01-01","end":"2018-06-30","val":71000000,"accn":"0001552000-19-000064","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-05"},{"start":"2018-01-01","end":"2018-09-30","val":157000000,"accn":"0001552000-18-000052","fy":2018,"fp":"Q3","form":"10-Q","filed":"2018-11-05"},{"start":"2018-01-01","end":"2018-09-30","val":157000000,"accn":"0001552000-19-000075","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-04"},{"start":"2018-01-01","end":"2018-12-31","val":122000000,"accn":"0001552000-19-000006","fy":2018,"fp":"FY","form":"10-K","filed":"2019-02-28"},{"start":"2018-01-01","end":"2018-12-31","val":104000000,"accn":"0001552000-20-000007","fy":2019,"fp":"FY","form":"10-K","filed":"2020-02-28"},{"start":"2018-01-01","end":"2018-12-31","val":104000000,"accn":"0001552000-21-000017","fy":2020,"fp":"FY","form":"10-K","filed":"2021-02-26","frame":"CY2018"},{"start":"2019-01-01","end":"2019-03-31","val":-57000000,"accn":"0001552000-19-000030","fy":2019,"fp":"Q1","form":"10-Q","filed":"2019-05-09"},{"start":"2019-01-01","end":"2019-03-31","val":-6000000,"accn":"0001552000-20-000040","fy":2020,"fp":"Q1","form":"10-Q","filed":"2020-05-07","frame":"CY2019Q1"},{"start":"2019-01-01","end":"2019-06-30","val":-82000000,"accn":"0001552000-19-000064","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-05"},{"start":"2019-01-01","end":"2019-06-30","val":-75000000,"accn":"0001552000-20-000046","fy":2020,"fp":"Q2","form":"10-Q","filed":"2020-08-03"},{"start":"2019-01-01","end":"2019-09-30","val":-38000000,"accn":"0001552000-19-000075","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-04"},{"start":"2019-01-01","end":"2019-09-30","val":-38000000,"accn":"0001552000-20-000074","fy":2020,"fp":"Q3","form":"10-Q","filed":"2020-11-06"},{"start":"2019-01-01","end":"2019-12-31","val":-17000000,"accn":"0001552000-20-000007","fy":2019,"fp":"FY","form":"10-K","filed":"2020-02-28"},{"start":"2019-01-01","end":"2019-12-31","val":-17000000,"accn":"0001552000-21-000017","fy":2020,"fp":"FY","form":"10-K","filed":"2021-02-26"},{"start":"2019-01-01","end":"2019-12-31","val":-17000000,"accn":"0001552000-22-000007","fy":2021,"fp":"FY","form":"10-K","filed":"2022-02-24","frame":"CY2019"},{"start":"2020-01-01","end":"2020-03-31","val":-71000000,"accn":"0001552000-20-000040","fy":2020,"fp":"Q1","form":"10-Q","filed":"2020-05-07"},{"start":"2020-01-01","end":"2020-03-31","val":-71000000,"accn":"0001552000-21-000026","fy":2021,"fp":"Q1","form":"10-Q","filed":"2021-05-06","frame":"CY2020Q1"},{"start":"2020-01-01","end":"2020-06-30","val":-31000000,"accn":"0001552000-20-000046","fy":2020,"fp":"Q2","form":"10-Q","filed":"2020-08-03"},{"start":"2020-01-01","end":"2020-06-30","val":-31000000,"accn":"0001552000-21-000034","fy":2021,"fp":"Q2","form":"10-Q","filed":"2021-08-04"},{"start":"2020-01-01","end":"2020-09-30","val":-69000000,"accn":"0001552000-20-000074","fy":2020,"fp":"Q3","form":"10-Q","filed":"2020-11-06"},{"start":"2020-01-01","end":"2020-09-30","val":-69000000,"accn":"0001552000-21-000042","fy":2021,"fp":"Q3","form":"10-Q","filed":"2021-11-02"},{"start":"2020-01-01","end":"2020-12-31","val":-62000000,"accn":"0001552000-21-000017","fy":2020,"fp":"FY","form":"10-K","filed":"2021-02-26"},{"start":"2020-01-01","end":"2020-12-31","val":-62000000,"accn":"0001552000-22-000007","fy":2021,"fp":"FY","form":"10-K","filed":"2022-02-24"},{"start":"2020-01-01","end":"2020-12-31","val":-62000000,"accn":"0001552000-23-000008","fy":2022,"fp":"FY","form":"10-K","filed":"2023-02-23","frame":"CY2020"},{"start":"2021-01-01","end":"2021-03-31","val":67000000,"accn":"0001552000-21-000026","fy":2021,"fp":"Q1","form":"10-Q","filed":"2021-05-06"},{"start":"2021-01-01","end":"2021-03-31","val":67000000,"accn":"0001552000-22-000016","fy":2022,"fp":"Q1","form":"10-Q","filed":"2022-05-03","frame":"CY2021Q1"},{"start":"2021-01-01","end":"2021-06-30","val":83000000,"accn":"0001552000-21-000034","fy":2021,"fp":"Q2","form":"10-Q","filed":"2021-08-04"},{"start":"2021-01-01","end":"2021-06-30","val":83000000,"accn":"0001552000-22-000034","fy":2022,"fp":"Q2","form":"10-Q","filed":"2022-08-02"},{"start":"2021-01-01","end":"2021-09-30","val":162000000,"accn":"0001552000-21-000042","fy":2021,"fp":"Q3","form":"10-Q","filed":"2021-11-02"},{"start":"2021-01-01","end":"2021-09-30","val":162000000,"accn":"0001552000-22-000045","fy":2022,"fp":"Q3","form":"10-Q","filed":"2022-11-01"},{"start":"2021-01-01","end":"2021-12-31","val":199000000,"accn":"0001552000-22-000007","fy":2021,"fp":"FY","form":"10-K","filed":"2022-02-24"},{"start":"2021-01-01","end":"2021-12-31","val":199000000,"accn":"0001552000-23-000008","fy":2022,"fp":"FY","form":"10-K","filed":"2023-02-23"},{"start":"2021-01-01","end":"2021-12-31","val":199000000,"accn":"0001552000-24-000007","fy":2023,"fp":"FY","form":"10-K","filed":"2024-02-28","frame":"CY2021"},{"start":"2022-01-01","end":"2022-03-31","val":87000000,"accn":"0001552000-22-000016","fy":2022,"fp":"Q1","form":"10-Q","filed":"2022-05-03"},{"start":"2022-01-01","end":"2022-03-31","val":87000000,"accn":"0001552000-23-000014","fy":2023,"fp":"Q1","form":"10-Q","filed":"2023-05-02","frame":"CY2022Q1"},{"start":"2022-01-01","end":"2022-06-30","val":131000000,"accn":"0001552000-22-000034","fy":2022,"fp":"Q2","form":"10-Q","filed":"2022-08-02"},{"start":"2022-01-01","end":"2022-06-30","val":131000000,"accn":"0001552000-23-000030","fy":2023,"fp":"Q2","form":"10-Q","filed":"2023-08-01"},{"start":"2022-01-01","end":"2022-09-30","val":219000000,"accn":"0001552000-22-000045","fy":2022,"fp":"Q3","form":"10-Q","filed":"2022-11-01"},{"start":"2022-01-01","end":"2022-09-30","val":219000000,"accn":"0001552000-23-000038","fy":2023,"fp":"Q3","form":"10-Q","filed":"2023-10-31"},{"start":"2022-01-01","end":"2022-12-31","val":-14000000,"accn":"0001552000-23-000008","fy":2022,"fp":"FY","form":"10-K","filed":"2023-02-23"},{"start":"2022-01-01","end":"2022-12-31","val":-14000000,"accn":"0001552000-24-000007","fy":2023,"fp":"FY","form":"10-K","filed":"2024-02-28"},{"start":"2022-01-01","end":"2022-12-31","val":-14000000,"accn":"0001552000-25-000012","fy":2024,"fp":"FY","form":"10-K","filed":"2025-02-27","frame":"CY2022"},{"start":"2023-01-01","end":"2023-03-31","val":-38000000,"accn":"0001552000-23-000014","fy":2023,"fp":"Q1","form":"10-Q","filed":"2023-05-02"},{"start":"2023-01-01","end":"2023-03-31","val":-38000000,"accn":"0001552000-24-000014","fy":2024,"fp":"Q1","form":"10-Q","filed":"2024-04-30","frame":"CY2023Q1"},{"start":"2023-01-01","end":"2023-06-30","val":-54000000,"accn":"0001552000-23-000030","fy":2023,"fp":"Q2","form":"10-Q","filed":"2023-08-01"},{"start":"2023-01-01","end":"2023-06-30","val":-54000000,"accn":"0001552000-24-000026","fy":2024,"fp":"Q2","form":"10-Q","filed":"2024-08-06"},{"start":"2023-01-01","end":"2023-09-30","val":31000000,"accn":"0001552000-23-000038","fy":2023,"fp":"Q3","form":"10-Q","filed":"2023-10-31"},{"start":"2023-01-01","end":"2023-09-30","val":31000000,"accn":"0001552000-24-000033","fy":2024,"fp":"Q3","form":"10-Q","filed":"2024-11-05"},{"start":"2023-01-01","end":"2023-12-31","val":-14000000,"accn":"0001552000-24-000007","fy":2023,"fp":"FY","form":"10-K","filed":"2024-02-28"},{"start":"2023-01-01","end":"2023-12-31","val":-14000000,"accn":"0001552000-25-000012","fy":2024,"fp":"FY","form":"10-K","filed":"2025-02-27"},{"start":"2023-01-01","end":"2023-12-31","val":-14000000,"accn":"0001552000-26-000009","fy":2025,"fp":"FY","form":"10-K","filed":"2026-02-26","frame":"CY2023"},{"start":"2024-01-01","end":"2024-03-31","val":-95000000,"accn":"0001552000-24-000014","fy":2024,"fp":"Q1","form":"10-Q","filed":"2024-04-30"},{"start":"2024-01-01","end":"2024-03-31","val":-95000000,"accn":"0001552000-25-000019","fy":2025,"fp":"Q1","form":"10-Q","filed":"2025-05-06","frame":"CY2024Q1"},{"start":"2024-01-01","end":"2024-06-30","val":-117000000,"accn":"0001552000-24-000026","fy":2024,"fp":"Q2","form":"10-Q","filed":"2024-08-06"},{"start":"2024-01-01","end":"2024-06-30","val":-117000000,"accn":"0001552000-25-000026","fy":2025,"fp":"Q2","form":"10-Q","filed":"2025-08-05"},{"start":"2024-01-01","end":"2024-09-30","val":-138000000,"accn":"0001552000-24-000033","fy":2024,"fp":"Q3","form":"10-Q","filed":"2024-11-05"},{"start":"2024-01-01","end":"2024-09-30","val":-138000000,"accn":"0001552000-25-000036","fy":2025,"fp":"Q3","form":"10-Q","filed":"2025-11-04"},{"start":"2024-01-01","end":"2024-12-31","val":-180000000,"accn":"0001552000-25-000012","fy":2024,"fp":"FY","form":"10-K","filed":"2025-02-27"},{"start":"2024-01-01","end":"2024-12-31","val":-180000000,"accn":"0001552000-26-000009","fy":2025,"fp":"FY","form":"10-K","filed":"2026-02-26","frame":"CY2024"},{"start":"2025-01-01","end":"2025-03-31","val":100000000,"accn":"0001552000-25-000019","fy":2025,"fp":"Q1","form":"10-Q","filed":"2025-05-06"},{"start":"2025-01-01","end":"2025-03-31","val":100000000,"accn":"0001552000-26-000025","fy":2026,"fp":"Q1","form":"10-Q","filed":"2026-05-05","frame":"CY2025Q1"},{"start":"2025-01-01","end":"2025-06-30","val":-32000000,"accn":"0001552000-25-000026","fy":2025,"fp":"Q2","form":"10-Q","filed":"2025-08-05"},{"start":"2025-01-01","end":"2025-09-30","val":-44000000,"accn":"0001552000-25-000036","fy":2025,"fp":"Q3","form":"10-Q","filed":"2025-11-04"},{"start":"2025-01-01","end":"2025-12-31","val":-48000000,"accn":"0001552000-26-000009","fy":2025,"fp":"FY","form":"10-K","filed":"2026-02-26","frame":"CY2025"},{"start":"2026-01-01","end":"2026-03-31","val":24000000,"accn":"0001552000-26-000025","fy":2026,"fp":"Q1","form":"10-Q","filed":"2026-05-05","frame":"CY2026Q1"}]}}