Summary of Estimated Fair Values of Assets Acquired and Liabilities Assumed at Acquisition Date (Detail) - USD ($) $ in Millions		Dec. 31, 2015	Nov. 06, 2015	Dec. 31, 2014	Dec. 31, 2013	[1]
Business Acquisition [Line Items]
Goodwill		$ 13,576		$ 10,862	$ 10,348
Sikorsky Aircraft Corporation
Business Acquisition [Line Items]
Cash and cash equivalents			$ 75
Receivables			1,921
Inventories			1,817
Deferred income taxes, current			72
Other current assets			36
Property, plant and equipment			654
Goodwill			2,764
Other noncurrent assets			502
Deferred income taxes, noncurrent			214
Total identifiable assets and goodwill			11,998
Accounts payable			(565)
Customer advances and amounts in excess of costs incurred			(1,220)
Salaries, benefits, and payroll taxes			(105)
Current portion of long-term debt			(5)
Other current liabilities			(347)
Long-term debt			(11)
Customer contractual obligations	[2]		(480)
Other noncurrent liabilities			(150)
Deferred income tax liabilities, noncurrent			(32)
Total liabilities assumed			(2,915)
Total consideration			9,083
Sikorsky Aircraft Corporation | Customer Programs
Business Acquisition [Line Items]
Intangible assets			3,127
Sikorsky Aircraft Corporation | Trademarks
Business Acquisition [Line Items]
Intangible assets			$ 816

[1] Includes reclassifications of goodwill among our business segments as a result of our program realignment, which occurred during the fourth quarter of 2015 (Note 1).

[2] Recorded in Other noncurrent liabilities on the consolidated balance sheet.