Long-Term Debt And Lease Obligation (Tables)

12 Months Ended

Dec. 31, 2019

Long-term Debt and Lease Obligation [Abstract]

Book Value And Principal Amounts Of Long-Term Debt

This table summarizes the principal amounts of our long-term debt excluding unamortized discounts, none of which are encumbered by rating triggers:

(Dollars in millions)			Book value				Principal amount
Interest rate	Year of  issue		At December 31,				At December 31,
			2019		2018		2019		2018
6.900%	1998	Senior debentures, due 2028	$	27	$	27	$	28	$	28
6.920%	2005	Senior debentures, due 2028	391		391		391		391
6.125%	2004	Senior notes, due 2034	370		370		374		374
		Total	$	788	$	788	$	793	$	793

Capital Lease Payments Over Next Five Years

interest and remaining lease residual values for finance leases we expect to pay. Below are the expected lease obligations we expect to pay through years 2025 and thereafter:

(Dollars in millions)	Years ended December 31,
	2020		2021		2022		2023		2024		2025 and thereafter
Finance lease obligations	$	14	$	10	$	8	$	6	$	3	$	1
Operating lease obligations	5		2		2		2		1		3
Total lease obligations	$	19	$	12	$	10	$	8	$	4	$	4

Other Operating and Finance Lease Disclosure [Table Text Block]

The following table provides lease cost and other information for the year ended December 31, 2019:

(Dollars in millions)
	2019
Lease cost:
Finance lease cost	$	9
Operating lease cost	4
Total lease cost	$	13
Other information finance leases:
Finance cash outflows	$	15
Weighted average discount rate	2.96		%
Weighted average remaining lease term in years	3.65
Other information operating leases:
Operating cash outflows	$	8
Weighted average discount rate	3.69		%
Weighted average remaining lease term in years	4.71