Accounts Receivable (Tables)

9 Months Ended

Sep. 30, 2017

Accounts Receivable [Abstract]

Accounts Receivable

($ in millions)	September 30, 2017		December 31, 2016
Retail and wholesale	$	768	$	979
Other		81		90
Less: Allowance for doubtful accounts		(69)		(131)
Accounts receivable, net	$	780	$	938

Allowance For Doubtful Accounts

	For the three months ended September 30,				For the nine months ended September 30,
($ in millions)	2017		2016		2017		2016
Bad debt expense	$	26	$	56	$	83	$	104