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Long-Term Debt And Lease Obligation
12 Months Ended
Dec. 31, 2021
Long-term Debt and Lease Obligation [Abstract]  
Long-Term Debt and Lease Obligation Text Block Long-Term Debt and Lease Obligations
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 valuePrincipal amount
 Interest rate Year of
 issue
 At December 31,At December 31,
 2021202020212020
6.900%1998Senior debentures, due 2028$27 $27 $28 $28 
6.920%2005Senior debentures, due 2028391 391 391 391 
6.125%2004Senior notes, due 2034371 370 374 374 
  Total$789 $788 $793 $793 
 
The finance lease term for equipment and autos is three to six years while the operating lease term for real estate properties is typically five years. Lease obligations totaled $54 million and $57 million in 2021 and 2020, respectively. Below are the lease obligations we expect to pay through years 2027 and thereafter including $3 million of interest for finance and operating leases:
(Dollars in millions)Years ended December 31,
 202220232024202520262027 and thereafter
Finance lease obligations$14 $12 $$$$
Operating lease obligations
   Total lease obligations$18 $14 $10 $$$

The following table provides lease cost and other information:
(Dollars in millions)Years ended December 31,
202120202019
Lease cost:
   Finance lease cost$15 $15 $
   Operating lease cost4 
Total lease cost$19 $19 $13 
Other information finance leases:
   Finance cash outflows $15 $15 $15 
Weighted average discount rate2.46 %2.62 %2.96 %
Weighted average remaining lease term in years3.453.673.65
Other information operating leases:
   Operating cash outflows $4 $$
Weighted average discount rate2.86 %3.65 %3.69 %
Weighted average remaining lease term in years4.374.844.71