Accounts Receivable (Tables)

6 Months Ended

Jun. 30, 2017

Accounts Receivable [Abstract]

Accounts Receivable

($ in millions)	June 30, 2017		December 31, 2016
Retail and wholesale	$	778	$	979
Other		84		90
Less: Allowance for doubtful accounts		(73)		(131)
Accounts receivable, net	$	789	$	938

Allowance For Doubtful Accounts

	For the three months ended June 30,				For the six months ended June 30,
($ in millions)	2017		2016		2017		2016
Bad debt expense	$	25	$	34	$	57	$	48