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Subsequent Events (Details) - USD ($) $ in Billions	Aug. 02, 2022	Nov. 02, 2020
Subsequent Event | Share Repurchase Authorization August 2022
Subsequent Event [Line Items]
Stock repurchase program, authorized amount	$ 5.0
MPLX LP:
Subsequent Event [Line Items]
Stock repurchase program, authorized amount		$ 1.0
MPLX LP: | Subsequent Event | Share Repurchase Authorization August 2022
Subsequent Event [Line Items]
Stock repurchase program, authorized amount	$ 1.0

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- Definition

Amount of stock repurchase plan authorized.

+ References

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

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- Details

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