Accounts Receivable (Tables)

6 Months Ended

Jun. 30, 2018

Accounts Receivable [Abstract]

Accounts Receivable

($ in millions)	June 30, 2018		December 31, 2017
Retail and wholesale	$	765	$	801
Other		88		87
Less: Allowance for doubtful accounts		(102)		(69)
Accounts receivable, net	$	751	$	819

Allowance For Doubtful Accounts

	For the three months ended June 30,				For the six months ended June 30,
($ in millions)	2018		2017		2018		2017
Bad debt expense	$	22	$	25	$	41	$	57