Valuation And Qualifying Accounts

12 Months Ended

Dec. 31, 2012

Valuation and Qualifying Accounts [Abstract]

Valuation and Qualifying Accounts

SCHEDULE II–VALUATION AND QUALIFYING ACCOUNTS

(Dollars in millions)	2010			2011			2012
Balance on January 1	$	108		$	122		$	152
Charged to costs and expenses	18			48			262
Deductions from reserves	1			(14		)	(19		)
Other adjustments*	(5		)	(4		)	2
Balance on December 31	$	122		$	152		$	397

Allowance and valuation accounts consist of accounts receivable allowance for doubtful accounts and valuation allowance on deferred tax assets. These amounts are deducted from the assets to which they apply.

* Primarily consists of foreign currency translation adjustments.