REVENUE RECOGNITION (Tables)

12 Months Ended

Dec. 31, 2021

REVENUE RECOGNITION

Schedule of reconciliation of contract balances

	December 31,
(Dollars in millions)	2021		2020
Accounts receivable (net of allowances of $44 in 2021 and $91 in 2020)	$	2,279	$	1,444
Contract assets *		62		72
Deferred income (current)		872		854
Deferred income (noncurrent)		475		543

* Included within prepaid expenses and other current assets in the Consolidated Balance Sheet.

Schedule of notes and accounts receivable - trade allowance for credit losses

	Year Ended December 31,
(Dollars in millions)	2021		2020		2019
Beginning balance	$	91	$	82	$	111
Additions (releases)		(23)		25		51
Write-offs		(5)		(7)		(78)
Other *		(19)		(9)		(3)
Ending balance	$	44	$	91	$	82

* Primarily represents translation adjustments and reclassifications.

Schedule of capitalized costs to acquire and fulfill customer contracts

	December 31,
(Dollars in millions)	2021		2020
Deferred transition costs	$	1,012	$	1,369
Prepaid software costs		658		679
Capitalized costs to fulfill contracts		235		328
Capitalized costs to obtain contracts		282		269
Total deferred costs *	$	2,185	$	2,646

* Of the total deferred costs, $920 million was current and $1,265 million was noncurrent at December 31, 2021, and $1,205 million was current and $1,441 million was noncurrent at December 31, 2020.