Inventories and Contracts in Progress (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Inventory [Line Items]
Other Inventory, Capitalized Costs, Gross	$ 155	$ 159
Raw materials	2,039	1,983
Work-in-process	3,788	4,600
Finished goods	3,824	3,360
Contracts in progress	8,572	7,929
Inventory before payments and billings	18,223	17,872
Progress payments, secured by lien, on U.S. Government contracts	(507)	(279)
Billings on contracts in progress	(7,820)	(7,263)
Inventories and contracts in progress, net	9,896	10,330
Sikorsky [Member]
Inventory [Line Items]
Other Inventory, Capitalized Costs, Gross		740
Inventory Adjustments	$ 1,300