Commitments (Tables)

9 Months Ended

Sep. 30, 2011

Commitments

Changes in warranty liabilities

Standard Warranty Liability

(Dollars in millions)	2011			2010
Balance at January 1	$	375		$	316
Current period accruals	309			284
Accrual adjustments to reflect actual experience	15			31
Charges incurred	(318		)	(326		)
Balance at September 30	$	382		$	305

Extended Warranty Liability

(Dollars in millions)	2011			2010
Aggregate deferred revenue at January 1	$	670		$		665
Revenue deferred for new extended warranty contracts	225			217
Amortization of deferred revenue	(256		)	(221			)
Other*	(18		)	(29			)
Aggregate deferred revenue at September 30	$	621		$		632
Current portion	$	305		$		303
Noncurrent portion	316			329
Aggregate deferred revenue at September 30	$	621		$	632

* Other primarily consists of foreign currency translation adjustments.