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Consolidated Statements of Capitalization - Long-term Debt Maturities
$ in Millions
Dec. 31, 2020
USD ($)
Debt Instrument [Line Items]  
Total long-term debt maturities $ 2,872
Long Term Debt Maturities  
Debt Instrument [Line Items]  
2021 278
2022 250
2023 0
2024 0
2025 0
Thereafter 2,375
Total long-term debt maturities 2,903
Tampa Electric [Member]  
Debt Instrument [Line Items]  
2021 231
2022 225
2023 0
2024 0
2025 0
Thereafter 2,110
Total long-term debt maturities 2,566
PGS [Member]  
Debt Instrument [Line Items]  
2021 47
2022 25
2023 0
2024 0
2025 0
Thereafter 265
Total long-term debt maturities $ 337