Commitments (Tables)

6 Months Ended

Jun. 30, 2011

Commitments

Changes in warranty liabilities

Standard Warranty Liability

(Dollars in millions)	2011			2010
Balance at January 1	$	375		$	316
Current period accruals	203			189
Accrual adjustments to reflect actual experience	18			20
Charges incurred	(215		)	(217		)
Balance at June 30	$	381		$	308

Extended Warranty Liability

(Dollars in millions)	2011			2010
Aggregate deferred revenue at January 1	$	670		$	665
Revenue deferred for new extended warranty contracts	141			145
Amortization of deferred revenue	(164		)	(149		)
Other*	2			(52		)
Aggregate deferred revenue at June 30	$	649		$	608
Current portion	$	309		$	283
Noncurrent portion	340			325
Aggregate deferred revenue at June 30	$	649		$	608

* Other primarily consists of foreign currency translation adjustments.