Valuation And Qualifying Accounts

12 Months Ended

Dec. 31, 2011

Valuation and Qualifying Accounts [Abstract]

Valuation and Qualifying Accounts

SCHEDULE II–VALUATION AND QUALIFYING ACCOUNTS

(Dollars in millions)	2009		2010			2011
Balance on January 1	$	98	$	108		$	122
Charged to costs and expenses		10		18			48
Deductions from reserves		(2)		1			(14	)
Other adjustments*		2		(5	)		(4	)
Balance on December 31	$	108	$	122		$	152

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.

* Includes amounts assumed in business combinations and foreign currency translation adjustments.