v3.5.0.2

Note 6 - Investment in Unconsolidated Affiliates Uintah Basin Field Services, LLC (“UBFS”) and Three Rivers Gathering (“TRG”), LLC Joint Ventures Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Equity Method Investments
Investment in unconsolidated affiliates	$ 58	$ 57	[1]
UBFS
Equity Method Investments
Ownership interest	38.00%
Investment in unconsolidated affiliates		18
Equity method investment, difference between carrying amount and underlying equity	$ 8
TRG
Equity Method Investments
Ownership interest	50.00%
Investment in unconsolidated affiliates	$ 41	$ 39
Equity method investment, difference between carrying amount and underlying equity	$ 17
[1] Adjusted to include the historical results of the Predecessors. See Notes 1 and 2 for further discussion.

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- Definition

Difference between amount at which an investment accounted for under the equity method of accounting is carried (reported) on the balance sheet and amount of underlying equity in net assets the reporting Entity has in the investee.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

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Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

The number of units or percentage investment held in the subsidiary by the limited liability company or limited partnership.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611443-123010

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