Receivables (Tables)

12 Months Ended

Dec. 31, 2013

Transfers And Servicing [Abstract]

Schedule of Allowance for Doubtful Accounts

The following table details the changes in the allowance for doubtful accounts related to customer receivables and other receivables:

	Customer receivables									Other receivables
December 31,	2013			2012			2011			2013			2012			2011
Balance at beginning of year	$	39		$	46		$	46		$	74		$	79		$	87
Provision for doubtful accounts		3			2			19			29			9			7
Write off of uncollectible accounts		(19	)		(8	)		(14	)		(39	)		(3	)		(3	)
Recoveries of prior write-offs		(3	)		(1	)		(3	)		(10	)		(6	)		(5	)
Other		-			-			(2	)		(7	)		(5	)		(7	)
Balance at end of year	$	20		$	39		$	46		$	47		$	74		$	79