Commitments (Tables)

9 Months Ended

Sep. 30, 2020

Commitments

Changes in warranty liabilities

Standard Warranty Liability

(Dollars in millions)	2020		2019
Balance at January 1	$	113	$	118
Current period accruals		56		66
Accrual adjustments to reflect actual experience		(15)		(1)
Charges incurred		(73)		(86)
Balance at September 30	$	80	$	98

Extended Warranty Liability

(Dollars in millions)	2020		2019
Balance at January 1	$	477	$	533
Revenue deferred for new extended warranty contracts		115		124
Amortization of deferred revenue		(169)		(194)
Other*		(3)		(8)
Balance at September 30	$	419	$	455
Current portion	$	196	$	226
Noncurrent portion	$	223	$	230

* Other primarily consists of foreign currency translation adjustments.