Accounts Receivable (Tables)

9 Months Ended

Sep. 30, 2016

Accounts Receivable [Abstract]

Accounts Receivable

($ in millions)	September 30, 2016		December 31, 2015
Retail and Wholesale	$	1,000	$	569
Other		115		59
Less: Allowance for doubtful accounts		(111)		(57)
Accounts receivable, net	$	1,004	$	571

Allowance For Doubtful Accounts

	For the three months ended September 30,				For the nine months ended September 30,
($ in millions)	2016		2015		2016		2015
Bad debt expense	$	56	$	21	$	104	$	46