Income Taxes - Components of Net Deferred Tax Assets and Liabilities (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Deferred tax assets:
Inventoried costs	$ 72	$ 33
Compensation and benefits	164	114
Pension and postretirement benefits	207	444
Loss carryforwards	24	20
Tax credit carryforwards	7	9
Other	75	48
Gross deferred tax assets	549	668
Less: valuation allowance	(22)	(19)
Net deferred tax assets	527	649
Deferred tax liabilities:
Goodwill and other intangible assets	726	657
Income recognition on contracts in process	58	56
Property, plant and equipment	85	71
Long-term debt-CODES	81	73
Other	65	7
Gross deferred tax liabilities	1,015	864
Total net deferred tax liabilities	$ (488)	$ (215)