Other Financial Information (Tables)

12 Months Ended

Dec. 31, 2020

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Schedule of other current assets

The following table presents details of other current assets in our consolidated balance sheets:

	As of December 31,
	2020		2019
	(Dollars in millions)
Prepaid expenses	$	40	41
Contract acquisition costs	47		50
Contract fulfillment costs	28		28
Other	7		9
Total other current assets	$	122	128

Schedule of other noncurrent liabilities

The following table presents details of other noncurrent liabilities in our consolidated balance sheets:

	As of December 31,
	2020		2019
	(Dollars in millions)
Unrecognized tax benefits	$	448	454
Deferred revenue	108		108
Noncurrent operating lease liability	76		89
Other	53		61
Total other noncurrent liabilities	$	685	712