Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Disposal Group, Including Discontinued Operation, Description and Timing of Disposal			On November 6, 2015, we completed the sale of Sikorsky to Lockheed Martin Corp.
Discontinued Operations: Net sales	$ 0	$ 1,421	$ 0	$ 4,379
Discontinued Operations: Costs of sales	0	1,163	0	3,628
Discontinued Operations: Research and development	0	47	0	133
Discontinued Operations: Selling, general and administrative	1	88	2	264
Discontinued Operations: Other Income, net	0	14	0	40
Discontinued Operations: Income from operations	1	27	2	284
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax [Abstract]
Discontinued Operations: (Loss) gain on disposal	(4)	(38)	11	(66)
Discontinued Operations: Income tax benefit (expense)	(40)	54	12	140
Discontinued Operations: Income (loss) from discontinued operations	37	(65)	1	78
Net Cash Provided by (Used in) Discontinued Operations [Abstract]
Net cash outflows from discontinued operations			(2,480)	(366)
Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Pension curtailment	$ 0	$ 110	$ 0	$ 110