. Inventories

Inventories at Lower of Cost or Realizable Value. The table below presents the components of inventories at the lower of cost (first-in, first-out or average cost) or realizable value. The Company's inventories at December 31, 2017 were comprised primarily of amounts related to standard products. In addition, the Company classified inventories related to contracts for complex aerospace and electronic equipment and engineering and technical services according to the customers' specifications as inventoried contract costs, which was a component of contracts in process on the consolidated balance sheet at December 31, 2017. See Note 7 for additional information. In accordance with ASC 606, all inventories that customers do not currently control are classified within inventories on the Company's consolidated balance sheet at March 30, 2018, without regard to whether the goods promised to the customer are standard or customized.



	March 30, 2018		December 31, 2017
	(in millions)
Raw materials, components and sub-assemblies	$	349	$	184
Work in process	457		98
Finished goods	188		107
Total	$	994	$	389

Inventories at March 30, 2018 included G&A costs of $62 million. G&A costs incurred and recorded in inventories totaled $310 million during the quarter ended March 30, 2018, and G&A costs charged to cost of sales from inventories totaled $302 million during the quarter ended March 30, 2018. See Note 7 for information on G&A costs included in contracts in process for the quarter ended March 31, 2017.