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Accounts Receivable
12 Months Ended
Dec. 31, 2019
Accounts Receivable, after Allowance for Credit Loss [Abstract]  
Accounts Receivable Accounts Receivable, net
Accounts receivable at December 31 consisted of the following:
 
2019

 
2018

U.S. government contracts(1)

$1,121

 

$1,877

Commercial Airplanes
29

 
51

Global Services(2)
1,967

 
1,783

Defense, Space, & Security(2)
220

 
222

Other
2

 
3

Less valuation allowance
(73
)
 
(57
)
Total

$3,266

 

$3,879


(1) 
Includes foreign military sales through the U.S. government
(2) 
Excludes U.S. government contracts
Accounts receivable expected to be collected after one year are not material.