Acquisitions - Summary of Purchase Price Allocation (Detail) - Power Service [Member] - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2016	Jun. 01, 2016
Business Acquisition [Line Items]
Net purchase price	$ 176
Fair value of net assets acquired:
Current assets other than cash	26
Property, plant and equipment	12
Intangible assets		$ 46
Current liabilities	(19)
Deferred tax liabilities, net	(19)
Total fair value of net assets acquired	46
Goodwill	130
Trade Names [Member]
Fair value of net assets acquired:
Intangible assets	21
Customer Relationships [Member]
Fair value of net assets acquired:
Intangible assets	$ 25

Business combination recognized goodwill.

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Net purchase price

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Amount of liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date.

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The amount of identifiable intangible assets recognized as of the acquisition date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 55
-Paragraph 37
-URI http://asc.fasb.org/extlink&oid=73531372&loc=d3e2207-128464

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Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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