Goodwill and Other Intangible Assets - Schedule of Other Intangible Assets (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 755	$ 814
Less accumulated amortization	(315)	(285)
Total	440us-gaap_FiniteLivedIntangibleAssetsNet	529us-gaap_FiniteLivedIntangibleAssetsNet
Customer and Supplier Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets	576	604
Less accumulated amortization	(231)	(193)
Total	345	411
Covenants Not-to-Compete [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets	63	87
Less accumulated amortization	(44)	(57)
Total	19	30
Licenses Permits and Other [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets	116	123
Less accumulated amortization	(40)	(35)
Total	$ 76	$ 88

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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