Commitments (Tables)

6 Months Ended

Jun. 30, 2015

Commitments:

Changes in warranty liabilities

Standard Warranty Liability
(Dollars in millions)	2015		2014
Balance at January 1	$	197	$	376
Current period accruals		82		122
Accrual adjustments to reflect actual experience		9		8
Charges incurred		(100)		(172)
Balance at June 30	$	188	$	334

Extended Warranty Liability
(Dollars in millions)	2015		2014
Aggregate deferred revenue at January 1	$	536	$	579
Revenue deferred for new extended warranty contracts		122		132
Amortization of deferred revenue		(126)		(145)
Other*		(20)		(8)
Aggregate deferred revenue at June 30	$	512	$	558
Current portion	$	245	$	266
Noncurrent portion		267		292
Aggregate deferred revenue at June 30	$	512	$	558
* Other primarily consists of foreign currency translation adjustments.