Accounts Receivable, Net (Tables)

12 Months Ended

Dec. 31, 2020

Receivables [Abstract]

Accounts receivable

Accounts receivable, net consisted of the following:

	December 31
$ in millions	2020		2019
Due from U.S. government (1)	$	956	$	1,030
Due from international and other customers	578		329
Accounts receivable, gross	1,534		1,359
Allowance for expected credit losses	(33)		(33)
Accounts receivable, net	$	1,501	$	1,326

(1)Includes receivables due from the U.S. government associated with foreign military sales (FMS). For FMS, we contract with and are paid by the U.S. government.