Debt Guarantees (Details) - Jun. 30, 2015 - USD ($) $ in Millions		Total
Kinder Morgan Energy Partners, L.P. | Payment Guarantee
Guarantor Obligations [Line Items]
BNSF Ownership Percentage		0.50%
Principal Amount Guaranteed		$ 190
Maximum Future Payments		190
Maximum Recourse Amount	[1]	0
Capitalized Obligations	[2]	$ 2
Chevron Phillips Chemical Company, LP | Indemnification Agreement
Guarantor Obligations [Line Items]
BNSF Ownership Percentage		0.00%
Remaining Term (in years)		2 years
Capitalized Obligations	[3]	$ 4

[1] Reflects the maximum amount the Company could recover from a third party other than the counterparty.

[2] Reflects capitalized obligations that are recorded on the Company’s Consolidated Balance Sheet.

[3] Reflects the asset and corresponding liability for the fair value of these guarantees required by authoritative accounting guidance related to guarantees.