Carrying Amounts of Major Classes of Business Assets and Liabilities Classified as Discontinued Operations (Detail) - Information Systems & Global Solutions $ in Millions	Dec. 31, 2015 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Receivables, net	$ 807
Inventories, net	143
Other current assets	19
Property, plant and equipment, net	101
Goodwill	2,881
Intangible assets	125
Other noncurrent assets	54
Total assets of the disposal group	4,130
Accounts payable	(229)
Customer advances and amounts in excess of costs incurred	(285)
Salaries, benefits and payroll taxes	(209)
Other current liabilities	(225)
Deferred income taxes	(145)
Other noncurrent liabilities	(60)
Total liabilities of the disposal group	$ (1,153)