Receivables (Tables)

12 Months Ended

Dec. 31, 2011

Receivables [Abstract]

Schedule Of Allowance For Doubtful Accounts

	Customer receivables						Other receivables
December 31,	2011			2010			2011			2010
Balance at beginning of year	$	46		$	72		$	87		$	90
Provision for doubtful accounts		19			(8	)		7			1
Write off of uncollectible accounts		(14	)		(10	)		(3	)		(1	)
Recoveries of prior write-offs		(3	)		(4	)		(5	)		(3	)
Other		(2	)		(4	)		(7	)		-
Balance at end of year	$	46		$	46		$	79		$	87