Businesses Held for Sale and Discontinued Operations (Assets and Liabilities of Businesses Held for Sale) (Details) - USD ($) $ in Millions			9 Months Ended
	Jul. 01, 2016	Jun. 06, 2016	Sep. 30, 2016	Sep. 30, 2015	Mar. 30, 2016	Dec. 31, 2015	Dec. 03, 2015	Dec. 31, 2014
Assets
Current receivables(a)			$ 25,187			$ 27,022
Contract asset			24,354			21,156
Assets of discontinued operations			30,930			120,951
Liabilities
Liabilities of discontinued operations			9,782			46,487
Additional disclosures
Proceeds from sale of business			5,273	$ 754
Preferred stock, value, issued			6			6	$ 5,944	$ 5,000
Held for sale
Assets
Current receivables(a)			10			79
Inventories			130			583
Property, plant and equipment - net			81			1,208
Goodwill			28			370
Other Intangible Assets - Net			36			162
Contract asset			313			0
Other			13			416
Assets of discontinued operations			611			2,818
Liabilities
Accounts payable(a)			17			503
Other current liabilities			3			325
Other			8			33
Liabilities of discontinued operations			28			$ 861
Held for sale | GEAM
Additional disclosures
Proceeds from sale of business	$ 437
Additional proceeds from sale	48
Assets Under Management Carrying Amount					$ 100,000
Gain (loss) on sale of business net of tax	$ 260
Held for sale | Business at Aviation [Member]
Assets
Assets of discontinued operations			601
Liabilities
Liabilities of discontinued operations			58
Additional disclosures
Pre tax gain (loss) on sale of business			120
Gain (loss) on sale of business net of tax			145
Held for sale | IP
Liabilities
Liabilities of discontinued operations			0
Held for sale | Appliances
Additional disclosures
Proceeds from sale of business		$ 5,568
Gain (loss) on sale of business net of tax			$ 1,850
Held for sale | Financing Receivable | Appliances
Additional disclosures
Proceeds from sale of business		$ 773