Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2024

Share-Based Payment Arrangement [Abstract]

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award

The following table reflects activity related to our share-based compensation arrangements:

(Millions of dollars)	2024		2023		2022
Share-based compensation expense	$	137	$	211	$	153
Tax benefit recognized on share-based compensation expense	33		51		37
Cash received by MPC upon exercise of stock option awards	25		62		243
Tax benefit received for tax deductions for stock awards exercised	28		49		53

Summary of Stock Option Award Activity

The following is a summary of our common stock option activity in 2024: 

	Number of Shares	Weighted Average Exercise Price		Weighted Average Remaining Contractual Terms (in years)	Aggregate Intrinsic Value (Millions of dollars)
Outstanding at December 31, 2023	1,044,011	$	52.07
Exercised	(537,951)	46.97
Outstanding at December 31, 2024(a)	506,060	57.50		3.9	$	41

(a)    All options outstanding at December 31, 2024 are fully vested and exercisable.

Summary of Restricted Stock Award Activity

The following is a summary of restricted stock unit award activity of our common stock in 2024:

	Restricted Stock Units
	Number of Units	Weighted Average Grant Date Fair Value
Unvested at December 31, 2023	1,192,704	$	98.16
Granted	496,894	171.55
Vested	(606,774)	80.86
Forfeited	(49,555)	130.29
Unvested at December 31, 2024	1,033,269	142.08

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity, Vested And Unvested

The following is a summary of the values related to restricted stock and restricted stock unit awards held by MPC employees and non-employee directors:

	Restricted Stock				Restricted Stock Units
	Intrinsic Value of Awards Vested During the Period (Millions of dollars)		Weighted Average Grant Date Fair Value of Awards Granted During the Period		Intrinsic Value of Awards Vested During the Period (Millions of dollars)		Weighted Average Grant Date Fair Value of Awards Granted During the Period
2024	$	—	$	—	$	102	$	171.55
2023	—		—		144		133.94
2022	17		—		99		75.81

Share-Based Payment Arrangement, Performance Shares, Activity

The following is a summary of performance share unit awards activity in 2024:

	Number of Performance Share Units
Unvested at December 31, 2023	580,666
Granted	255,290
Vested	(393,862)
Forfeited	(14,746)
Unvested at December 31, 2024	427,348