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Property, Plant and Equipment - Property, Plant and Equipment (Detail) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	$ 13,618	$ 13,102
Less accumulated depreciation	1,980	1,694
Net property, plant and equipment	11,638	11,408
Natural gas gathering and NGL transportation and facilities [Member]
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	4,919	4,748
Processing, fractionation and storage facilities [Member]
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	3,736	3,547
Pipelines and related assets [Member]
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	2,156	1,799
Barges and towing vessels [Member]
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	484	479
Terminals and related assets [Member]
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	784	759
Land, building, office equipment and other [Member]
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	723	757
Construction-in-progress [Member]
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	$ 816	$ 1,013

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.14)
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- Definition

Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

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+ References

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