Accounts Receivable

9 Months Ended

Sep. 30, 2017

Accounts Receivable [Abstract]

Accounts Receivable

(4)Accounts Receivable:

The components of accounts receivable, net are as follows:

($ 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

We maintain an allowance for doubtful accounts based on our estimate of our ability to collect accounts receivable. During 2017, we resolved settlements with carriers resulting in a reduction to our reserves of approximately $35 million. Bad debt expense, which is recorded as a reduction to revenue, was as follows:

	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