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Receivables (Tables)
 6 Months Ended
Jun. 30, 2018
Receivables  
Schedule of receivables

 

 

 

 

 

 

 

 

 

June 30,

 

December 31,

($ in millions)

    

2018

    

2017

 

 

 

 

 

 

 

Trade accounts receivable

 

$

1,259

 

$

1,206

Unbilled receivables

 

 

390

 

 

147

Less allowance for doubtful accounts

 

 

(9)

 

 

(10)

Net trade accounts receivable

 

 

1,640

 

 

1,343

Other receivables

 

 

373

 

 

291

 

 

$

2,013

 

$

1,634