XML 48 R19.htm IDEA: XBRL DOCUMENT
v3.26.1

Earnings Per Share | 3 Months Ended
--- | ---
Mar. 31, 2026
Earnings Per Share [Abstract] |
Earnings per Share | Earnings Per Share We compute basic earnings per share by dividing net income attributable to MPC less income allocated to participating securities by the weighted average number of shares of common stock outstanding. Since MPC grants certain incentive compensation awards to employees and non-employee directors that are considered to be participating securities, we have calculated our earnings per share using the two-class method. Diluted income per share assumes exercise of certain share-based compensation awards, provided the effect is not anti-dilutive.
| Three Months Ended March 31, |  |
(In millions, except per share data) | 2026 |  | 2025 |  |  |  |
Basic earnings per share: |  |  |  |  |  |  |
Allocation of earnings |  |  |  |  |  |  |
Net income (loss) attributable to MPC | $ | 511 |  |  | $ | (74) |  |  |  |  |
Income allocated to participating securities | — |  |  | — |  |  |  |  |
Income (loss) available to common stockholders - basic | $ | 511 |  |  | $ | (74) |  |  |  |  |
Weighted average common shares outstanding | 295 |  |  | 313 |  |  |  |  |
Basic earnings (loss) per share | $ | 1.73 |  |  | $ | (0.24) |  |  |  |  |
Diluted earnings per share: |  |  |  |  |  |  |
Allocation of earnings |  |  |  |  |  |  |
Net income (loss) attributable to MPC | $ | 511 |  |  | $ | (74) |  |  |  |  |
Income allocated to participating securities | — |  |  | — |  |  |  |  |
Income (loss) available to common stockholders - diluted | $ | 511 |  |  | $ | (74) |  |  |  |  |
Weighted average common shares outstanding | 295 |  |  | 313 |  |  |  |  |
Effect of dilutive securities | — |  |  | — |  |  |  |  |
Weighted average common shares, including dilutive effect | 295 |  |  | 313 |  |  |  |  |
Diluted earnings (loss) per share | $ | 1.73 |  |  | $ | (0.24) |  |  |  |  |
Potential common shares that were anti-dilutive and, therefore, omitted from the diluted share calculation, were immaterial for all periods.

X
- References No definition available. + Details
Name: | us-gaap_EarningsPerShareAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/260/tableOfContent Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-3 + Details
Name: | us-gaap_EarningsPerShareTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration