Indemnification Asset For Environmental Loss Contingencies

No definition available.

Name:	bpmp_IndemnificationAssetForEnvironmentalLossContingencies
Namespace Prefix:	bpmp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Total costs accrued as of the balance sheet date for environmental loss contingencies.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
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Balance Type:	credit
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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Period Type:	instant

- 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).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount due in settlement of a claim for reimbursement from an insurance company when the Company has suffered a loss covered under an insurance policy. For classified balance sheets, represents the current amount receivable, that is amounts expected to be collected within one year or the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_InsuranceSettlementsReceivableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Carrying amount due after one year of the balance sheet date (or one operating cycle, if longer) of amount due in settlement of a claim for reimbursement from an insurance company when the Company has suffered a loss covered under an insurance policy.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Balance Type:	debit
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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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Balance Type:	na
Period Type:	duration

- Details

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Namespace Prefix:
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- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=bpmp_MarsOilPipelineCompanyLLCMember
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- Details

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Namespace Prefix:
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- Details

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- Details

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Commitments and Contingencies - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Site Contingency [Line Items]
Environmental liabilities	$ 3,600		$ 3,700
Indemnification assets	3,600		3,700
Impairment charge	$ 0	$ 2,300
Griffith Station [Member]
Site Contingency [Line Items]
Accrued insurance recovery			4,300
Insurance Settlements Receivable, Noncurrent			700
Insurance Settlements Receivable, Noncurrent			$ 700
Mars
Site Contingency [Line Items]
Equity Method Investment, Ownership Percentage	28.50%	28500000.00%
Mardi Gras Transportation System Company LLC
Site Contingency [Line Items]
Equity Method Investment, Ownership Percentage	65.00%
Caesar
Site Contingency [Line Items]
Equity Method Investment, Ownership Percentage	56.00%	56000000.00%
Cleopatra
Site Contingency [Line Items]
Equity Method Investment, Ownership Percentage	53.00%	53000000.00%
Endymion
Site Contingency [Line Items]
Equity Method Investment, Ownership Percentage	65.00%	65000000.00%
Proteus
Site Contingency [Line Items]
Equity Method Investment, Ownership Percentage	65.00%	65000000.00%
Ursa
Site Contingency [Line Items]
Equity Method Investment, Ownership Percentage	22.70%
KM Phoenix
Site Contingency [Line Items]
Equity Method Investment, Ownership Percentage	25.00%