Master Limited Partnerships - Dropdowns to MPLX and GP/IDR Exchange (Details) - MPLX shares in Millions, $ in Billions	Feb. 01, 2018 USD ($) shares
MPLX 364-day term loan
Noncontrolling Interest [Line Items]
Maximum borrowing capacity \| $	$ 4.1
Debt instrument, term	364 days
Cash and Cash Equivalents
Noncontrolling Interest [Line Items]
Cash consideration \| $	$ 4.1
Limited Partner
Noncontrolling Interest [Line Items]
Units issued, number of units	112
Conversion of stock, units issued	275
General Partner
Noncontrolling Interest [Line Items]
Units issued, number of units	2

Number of shares of equity interests issued or issuable to acquire entity.

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The number of new shares issued in the conversion of stock in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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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.

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- Definition

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

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