Ratio applied to the conversion of ANDX common units to MPLX common units

No definition available.

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- Definition

Description Of Business And Basis Of Presentation [Line Items]

+ References

No definition available.

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- Definition

Total impairment charges, which may include impairments for goodwill, property plant & equipment, intangibles and equity method investments.

+ References

No definition available.

+ Details

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- Definition

This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

+ References

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- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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- Definition

The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value.

+ References

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- Definition

The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

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Description of Business and Basis of Presentation - Additional Information (Detail) $ in Millions		3 Months Ended	12 Months Ended
	Jul. 30, 2019 shares	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Description Of Business And Basis Of Presentation [Line Items]
Goodwill, Impairment Loss		$ 1,814	$ 1,197
Equity Method Investment, Other than Temporary Impairment		1,264
Impairment of Intangible Assets, Finite-lived		$ 177
Number of reportable segments		2
Impairment of Long-Lived Assets Held-for-use		$ 174
Impairment Charges		3,429
G&P
Description Of Business And Basis Of Presentation [Line Items]
Goodwill, Impairment Loss		$ 1,814	$ 1,197
ANDX LP [Member] \| Public
Description Of Business And Basis Of Presentation [Line Items]
Common Units Conversion Ratio - ANDX to MPLX \| shares	1.135
ANDX LP [Member] \| Nonpublic [Member]
Description Of Business And Basis Of Presentation [Line Items]
Common Units Conversion Ratio - ANDX to MPLX \| shares	1.0328