Make Whole Premium

No definition available.

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- Definition

Amount of long-term debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

+ References

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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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

No definition available.

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- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Debt (MPC Senior Notes) (Details) - USD ($) $ in Millions	Mar. 15, 2018	Dec. 31, 2018	Oct. 02, 2018	Oct. 01, 2018	Dec. 31, 2017
Senior notes, 2.700% due December 2018
Debt Instrument [Line Items]
Repayments of long-term debt	$ 600.0
Make whole premium	$ 2.5
Andeavor
Debt Instrument [Line Items]
Long-term debt				$ 8,875.0
Senior Notes \| Andeavor
Debt Instrument [Line Items]
Long-term debt				$ 3,374.0
Senior Notes \| Marathon Petroleum Corporation
Debt Instrument [Line Items]
Long-term debt outstanding			$ 2,905.0
Senior Notes \| Marathon Petroleum Corporation \| Senior notes, 5.375% due October 2022
Debt Instrument [Line Items]
Long-term debt outstanding		$ 337.0	$ 337.0		$ 0.0
Debt instrument, interest rate		5.375%	5.375%
Senior Notes \| Marathon Petroleum Corporation \| Senior notes, 4.750% due December 2023
Debt Instrument [Line Items]
Long-term debt outstanding		$ 614.0	$ 614.0		0.0
Debt instrument, interest rate		4.75%	4.75%
Senior Notes \| Marathon Petroleum Corporation \| Senior notes, 5.125% due April 2024
Debt Instrument [Line Items]
Long-term debt outstanding		$ 241.0	$ 241.0		0.0
Debt instrument, interest rate		5.125%	5.125%
Senior Notes \| Marathon Petroleum Corporation \| Senior notes, 5.125% due December 2026
Debt Instrument [Line Items]
Long-term debt outstanding		$ 719.0	$ 719.0		0.0
Debt instrument, interest rate		5.125%	5.125%
Senior Notes \| Marathon Petroleum Corporation \| Senior notes, 3.800% due April 2028
Debt Instrument [Line Items]
Long-term debt outstanding		$ 496.0	$ 496.0		0.0
Debt instrument, interest rate		3.80%	3.80%
Senior Notes \| Marathon Petroleum Corporation \| Senior notes, 4.500% due April 2048
Debt Instrument [Line Items]
Long-term debt outstanding		$ 498.0	$ 498.0		0.0
Debt instrument, interest rate		4.50%	4.50%
Senior Notes \| Marathon Petroleum Corporation \| Senior notes, 2.700% due December 2018
Debt Instrument [Line Items]
Long-term debt outstanding		$ 0.0			600.0
Debt instrument, interest rate		2.70%
Senior Notes \| Marathon Petroleum Corporation \| Andeavor
Debt Instrument [Line Items]
Long-term debt outstanding		$ 469.0			$ 0.0
Senior Notes \| Marathon Petroleum Corporation \| Andeavor \| Senior notes, 5.375% due October 2022
Debt Instrument [Line Items]
Debt instrument, interest rate		5.375%
Senior Notes \| Marathon Petroleum Corporation \| Andeavor \| Senior notes, 4.750% due December 2023
Debt Instrument [Line Items]
Debt instrument, interest rate		4.75%
Senior Notes \| Marathon Petroleum Corporation \| Andeavor \| Senior notes, 5.125% due April 2024
Debt Instrument [Line Items]
Debt instrument, interest rate		5.125%
Senior Notes \| Marathon Petroleum Corporation \| Andeavor \| Senior notes, 5.125% due December 2026
Debt Instrument [Line Items]
Debt instrument, interest rate		5.125%
Senior Notes \| Marathon Petroleum Corporation \| Andeavor \| Senior notes, 3.800% due April 2028
Debt Instrument [Line Items]
Debt instrument, interest rate		3.80%
Senior Notes \| Marathon Petroleum Corporation \| Andeavor \| Senior notes, 4.500% due April 2048
Debt Instrument [Line Items]
Debt instrument, interest rate		4.50%
Senior Notes \| Andeavor \| Senior notes, 5.375% due October 2022
Debt Instrument [Line Items]
Long-term debt outstanding			$ 138.0
Debt instrument, interest rate			5.375%
Senior Notes \| Andeavor \| Senior notes, 4.750% due December 2023
Debt Instrument [Line Items]
Long-term debt outstanding			$ 236.0
Debt instrument, interest rate			4.75%
Senior Notes \| Andeavor \| Senior notes, 5.125% due April 2024
Debt Instrument [Line Items]
Long-term debt outstanding			$ 59.0
Debt instrument, interest rate			5.125%
Senior Notes \| Andeavor \| Senior notes, 5.125% due December 2026
Debt Instrument [Line Items]
Long-term debt outstanding			$ 30.0
Debt instrument, interest rate			5.125%
Senior Notes \| Andeavor \| Senior notes, 3.800% due April 2028
Debt Instrument [Line Items]
Long-term debt outstanding			$ 4.0
Debt instrument, interest rate			3.80%
Senior Notes \| Andeavor \| Senior notes, 4.500% due April 2048
Debt Instrument [Line Items]
Long-term debt outstanding			$ 2.0
Debt instrument, interest rate			4.50%