Schedule of Goodwill by Segment (Detail) $ in Millions	6 Months Ended
Jun. 30, 2018 USD ($)
Goodwill [Line Items]
Goodwill	$ 851
Acquisitions	33
Foreign currency rate impact	(8)
Purchase accounting adjustments	5
Goodwill	881
Operating Segments \| Business Solutions Division
Goodwill [Line Items]
Goodwill	328
Acquisitions	20
Purchase accounting adjustments	3
Goodwill	351
Operating Segments \| Retail Division
Goodwill [Line Items]
Goodwill	78
Goodwill	78
Operating Segments \| CompuCom Division
Goodwill [Line Items]
Goodwill	445
Acquisitions	13
Foreign currency rate impact	(8)
Purchase accounting adjustments	2
Goodwill	$ 452

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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