Accounts Receivable

3 Months Ended

Mar. 31, 2016

Accounts Receivable [Abstract]

Accounts Receivable

(4)   Accounts Receivable:

The components of accounts receivable, net are as follows:

($ in millions)	March 31, 2016		December 31, 2015
Retail and Wholesale	$	535	$	569
Other		62		59
Less: Allowance for doubtful accounts		(53)		(57)
Accounts receivable, net	$	544	$	571

We maintain an allowance for doubtful accounts based on our estimate of our ability to collect accounts receivable. Bad debt expense, which is recorded as a reduction to revenue,  was $13 million for each of the three months ended March 31, 2016 and 2015.