Name:	kmp_IncomeFromContinuingOperationsKmp
Namespace Prefix:	kmp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The amount of income (loss) from disposition of discontinued operations available to each limited partnership unit in a publicly traded limited partnership or a master limited partnership (MLP) during the reporting period, net of tax. Limited partners have limited liability and do not manage the partnership. AND The amount of income (loss) from disposition of discontinued operations available to each limited partner unit outstanding during the reporting period and each unit that would have been outstanding assuming the issuance of limited partner units for all dilutive potential units outstanding during the reporting period. Limited partners have limited liability and do not manage the partnership.

No definition available.

Name:	kmp_IncomeFromDiscontinued
Namespace Prefix:	kmp_
Data Type:	us-types:perShareItemType
Balance Type:	na
Period Type:	duration

This element represents the overall income (loss) from a disposal group that is classified as a component of the entity, net of income tax, reported as a separate component of income before extraordinary items and the cumulative effect of accounting changes before deduction or consideration of the amount which may be allocable to limited partners, if any. Includes the following (net of tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

No definition available.

Name:	kmp_IncomeFromDiscontinuedOperations
Namespace Prefix:	kmp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Increase in expense during period related to rate case litigation reserve adjustments

No definition available.

Name:	kmp_IncreaseInExpenseDuringPeriodRelatedToRateCaseLitigationReserveAdjustments
Namespace Prefix:	kmp_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

Increase in expense for one time special bonus allocation from KMI

No definition available.

Name:	kmp_IncreaseInExpenseForOneTimeSpecialBonusAllocationFromKmi
Namespace Prefix:	kmp_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

Increase in expense related to rights of way lease liability adjustments

No definition available.

Name:	kmp_IncreaseInExpenseRelatedToRightsOfWayLeaseLiabilityAdjustments
Namespace Prefix:	kmp_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	kmp_LimitedPartnersIncomeLossPerUnitAbstract
Namespace Prefix:	kmp_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Loss from remeasurement of 50% interest in Kinderhawk upon consolidation

No definition available.

Name:	kmp_LossFromRemeasurementOf50InterestInKinderhawkUponConsolidation
Namespace Prefix:	kmp_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

The amount of income (loss) from continuing operations available to each limited partnership unit in a publicly trade limited partnership or master limited partnership (MLP) during the reporting period. Limited partners have limited liability and do not manage the partnership. AND The amount of income (loss) from continuing operations available to each limited partner unit outstanding during the reporting period and each unit that would have been outstanding assuming the issuance of limited partner units for all dilutive potential units outstanding during the reporting period. Limited partners have limited liability and do not manage the partnership.

No definition available.

Name:	kmp_LpIncomeFromContinuingOperations
Namespace Prefix:	kmp_
Data Type:	us-types:perShareItemType
Balance Type:	na
Period Type:	duration

Net income (loss) allocated to each outstanding limited partnership unit in a publicly traded limited partnership or master limited partnership (MLP). Limited partners have limited liability and do not manage the partnership. AND Net income (loss) allocated to each limited partner unit outstanding during the reporting period and each unit that would have been outstanding assuming the issuance of limited partner units for all dilutive potential units outstanding during the reporting period. Limited partners have limited liability and do not manage the partnership.

No definition available.

Name:	kmp_NetIncomePerShare
Namespace Prefix:	kmp_
Data Type:	us-types:perShareItemType
Balance Type:	na
Period Type:	duration

The net result for the period of deducting operating expenses from operating revenues.

No definition available.

Name:	us-gaap_OperatingIncomeLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

-Number 51

-Paragraph A1, A4, A5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

-Number 51

-Paragraph 5

-Subparagraph b

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

-Number 51

-Paragraph 29

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

-Number 51

-Paragraph 38

-Subparagraph a

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

-Number 51

-Paragraph 38

-Subparagraph c(1)

Name:	us-gaap_ProfitLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_QuarterlyFinancialDataAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5