Other Liabilities (Details) - USD ($) $ in Millions		Jun. 30, 2019	Dec. 31, 2018
Other Liabilities Disclosure [Abstract]
Salaries and wages		$ 897	$ 952
Workers’ compensation		267	244
Retirement benefits		265	272
Operating lease liabilities		240	0
Fair value of cash flow hedges		79	141
Other	[1]	1,732	1,708
Total other current liabilities		3,480	3,317
Retirement benefits		4,241	4,422
Operating lease liabilities		1,112	0
Customer deposits on commercial contracts		630	726
Deferred income taxes		570	577
Other	[2]	1,655	1,768
Total other liabilities		$ 8,208	$ 7,493

[1] Consists primarily of dividends payable, taxes payable, environmental remediation reserves, warranty reserves, deferred revenue and supplier contributions in the Aerospace segment, liabilities of discontinued operations, finance lease liabilities and insurance-related costs.

[2] Consists primarily of warranty reserves, workers’ compensation liabilities, finance lease liabilities and liabilities of discontinued operations.