Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Taxes [Line Items]
Total net state income tax expense	$ 112	$ 106	$ 149
U.S. federal statutory income tax rate	35.00%	35.00%	35.00%
Recognized tax benefit for the impact of the tax credit	$ 107	$ 70	$ 63
Net deferred tax (benefit)	(231)	(473)	(351)
Undistributed earnings of foreign subsidiaries not taxed to U.S. income taxes and foreign withholding taxes	386	310	249
Estimated additional income tax expense after foreign tax credits on undistributed earnings of foreign companies if remitted	64	49	52
Federal and foreign income tax payments made, net of refunds received	1,300	1,800	1,500
Refund received from the IRS			200
Lockheed Martin Commercial Flight Training
Income Taxes [Line Items]
Asset impairment charge		90
Net deferred tax (benefit)		$ (80)
Tax benefit reduced the effective income tax rate		1.20%
Accounting Standards Update 2016-09 | Restatement Adjustment | Adjustments for New Accounting Principle, Early Adoption
Income Taxes [Line Items]
Excess income tax benefit from share-based compensation, operating activities	$ 152
Tax Year 2014
Income Taxes [Line Items]
Recognized tax benefit for the impact of the tax credit			$ 45
Earliest Tax Year | Internal Revenue Service (IRS)
Income Taxes [Line Items]
Tax years subject to examination	2015
Latest Tax Year | Internal Revenue Service (IRS)
Income Taxes [Line Items]
Tax years subject to examination	2016