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Consolidated Statements of Capitalization - Long-term Debt Maturities
$ in Millions
Dec. 31, 2019
USD ($)
Debt Instrument [Line Items]  
Total long-term debt maturities $ 2,869
Long Term Debt Maturities  
Debt Instrument [Line Items]  
2020 0
2021 279
2022 250
2023 0
2024 0
Thereafter 2,375
Total long-term debt maturities 2,904
Tampa Electric [Member]  
Debt Instrument [Line Items]  
2020 0
2021 232
2022 225
2023 0
2024 0
Thereafter 2,110
Total long-term debt maturities 2,567
PGS [Member]  
Debt Instrument [Line Items]  
2020 0
2021 47
2022 25
2023 0
2024 0
Thereafter 265
Total long-term debt maturities $ 337