Master Limited Partnership (Details)	Dec. 31, 2022
MPC \| MPLX
Noncontrolling Interest [Line Items]
MPC's partnership interest in MLPs (in percentage)	65.00%

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_MinorityInterestLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration