pre_text: As of December 31, 2019, maturities of lease liabilities were as follows: As of December 31, 2019, we had no material operating or finance leases that had not yet commenced.
table: Operating Leases Finance Leases
table: (Dollars in millions)
table: 2020 $460 47
table: 2021 361 28
table: 2022 308 22
table: 2023 265 22
table: 2024 194 21
table: Thereafter 686 170
table: Total lease payments 2,274 310
table: Less: interest (516) (90)
table: Total $1,758 220
table: Less: current portion (416) (35)
table: Long-term portion $1,342 185
question: Analyse this data from a financial earnings document. What is the sum of finance leases from 2020 to 2024?