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Acquisitions - Summary of Purchase Price Allocation (Detail) - Power Service [Member] - USD ($) $ in Millions		3 Months Ended
	Jun. 01, 2016	Mar. 31, 2017
Business Acquisition [Line Items]
Net purchase price	$ 179	$ 179
Fair value of net assets acquired:
Current assets other than cash		26
Property, plant and equipment		11
Intangible assets		45
Current liabilities		(21)
Deferred tax liabilities		(1)
Total fair value of net assets acquired		60
Goodwill		119
Trade Names [Member]
Fair value of net assets acquired:
Intangible assets		20
Customer Relationships [Member]
Fair value of net assets acquired:
Intangible assets		$ 25

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