Equity Method Investment, Additional Ownership Acquired

No definition available.

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- Definition

With respect to a business combination completed during the period, this element provides a description of the business, other than the name, which may include the industry, size, products and other important information.

+ References

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-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
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+ Details

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Section 50
-Paragraph 5
-Subparagraph (a)
-Publisher FASB
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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

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-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
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Period Type:	instant

- Definition

Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

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Balance Type:	debit
Period Type:	instant

- Definition

Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.

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- Definition

Percentage of voting equity interests acquired in a business combination achieved in stages, including equity interests in the acquiree held by the acquirer immediately before the acquisition date and acquired at the acquisition date.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Percentage of equity in the acquiree held by the acquirer immediately before the acquisition date in a business combination.

+ References

No definition available.

+ Details

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- Definition

In a business combination achieved in stages, this element represents the amount of gain recognized by the entity as a result of remeasuring to fair value the equity interest in the acquiree it held before the business combination.

+ References

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- Definition

Difference between amount at which an investment accounted for under the equity method of accounting is carried (reported) on the balance sheet and amount of underlying equity in net assets the reporting Entity has in the investee.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
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-Section 50
-Paragraph 3
-Subparagraph (a)(3)
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Period Type:	instant

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

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-Topic 323
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- Definition

Amount of gain (loss) on sale or disposal of equity in securities of subsidiaries or equity method investee.

+ References

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-Topic 220
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Balance Type:	credit
Period Type:	duration

- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

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-Topic 805
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Balance Type:	credit
Period Type:	duration

- Definition

The cash outflow associated with the investment in or advances to an entity in which the reporting entity shares control of the entity with another party or group.

+ References

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- Definition

Amount of distribution received from equity method investee for return of investment, classified as investing activities. Excludes distribution for return on investment, classified as operating activities.

+ References

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Business Combinations and Asset Acquisitions (Details) - USD ($) $ in Millions				9 Months Ended
	Jul. 31, 2024	May 29, 2024	Mar. 22, 2024	Sep. 30, 2024	Sep. 30, 2023	May 28, 2024
Business Acquisition [Line Items]
Proceeds from Equity Method Investment, Distribution, Return of Capital				$ 138	$ 0
Payments to Acquire Interest in Joint Venture				$ 414	$ 90
Utica Midstream
Business Acquisition [Line Items]
Business Acquisition, Description of Acquired Entity			On March 22, 2024, MPLX used $625 million of cash on hand to purchase additional ownership interest in existing joint ventures and gathering assets (the “Utica Midstream Acquisition”), which will enhance our position in the Utica basin. Prior to the acquisition, we owned an indirect interest in Ohio Gathering Company L.L.C. (“OGC”) and a direct interest in Ohio Condensate Company L.L.C. (“OCC”) and now own a combined 73 percent interest in OGC, a 100 percent interest in OCC, and a 100 percent interest in a dry gas gathering system in the Utica basin, including 53 miles of gathering pipeline and three dehydration units with a combined capacity of approximately 620 MMcf/d.
Payments to Acquire Businesses, Gross			$ 625
Business Acquisition, Percentage of Voting Interests Acquired			100.00%
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net			$ 625
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets			$ 518
Ohio Gathering Company L.L.C.
Business Acquisition [Line Items]
Business Combination, Step Acquisition, Equity Interest in Acquiree, Including Subsequent Acquisition, Percentage			73.00%
Difference between carrying amount and underlying equity			$ 86
Ohio Condensate Company, L.L.C.
Business Acquisition [Line Items]
Business Combination, Step Acquisition, Equity Interest in Acquiree, Including Subsequent Acquisition, Percentage			100.00%
Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage			62.00%
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain			$ 20
WPC Parent, LLC(3)
Business Acquisition [Line Items]
Gain (Loss) on Disposition of Stock in Subsidiary or Equity Method Investee		$ 151
Proceeds from Equity Method Investment, Distribution, Return of Capital		$ 134
WPC Parent, LLC(3) \| Enbridge Inc.
Business Acquisition [Line Items]
Equity method investment, ownership percentage		19.00%
WPC Parent, LLC(3) \| MPLX LP [Member]
Business Acquisition [Line Items]
Equity method investment, ownership percentage		30.40%
Whistler Pipeline LLC [Member] \| MPLX LP [Member]
Business Acquisition [Line Items]
Equity method investment, ownership percentage						37.50%
BANGL, LLC
Business Acquisition [Line Items]
Equity method investment, ownership percentage	45.00%
Difference between carrying amount and underlying equity	$ 156
Equity Method Investment, Addition Ownership Acquired	20.00%
Payments to Acquire Interest in Joint Venture	$ 210