Customer Financing (Customer Financing Asset Impairment Charges) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Customer Financing [Line Items]
Impairment charges	$ 113	$ 90	$ 167
Customer Financing [Member]
Customer Financing [Line Items]
Impairment charges	43	66	162
Customer Financing [Member] | Boeing Capital Corporation [Member]
Customer Financing [Line Items]
Impairment charges	13	45	162
Customer Financing [Member] | Other Boeing [Member]
Customer Financing [Line Items]
Impairment charges	$ 30	$ 21