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Consolidated Statements of Capitalization - Long-term Debt Maturities
$ in Millions
Dec. 31, 2021
USD ($)
Debt Instrument [Line Items]  
Long-term debt, carrying amount $ 3,386
Long Term Debt Maturities  
Debt Instrument [Line Items]  
2022 250
2023 0
2024 0
2025 0
2026 0
Thereafter 3,175
Long-term debt, carrying amount 3,425
Tampa Electric [Member]  
Debt Instrument [Line Items]  
2022 225
2023 0
2024 0
2025 0
2026 0
Thereafter 2,680
Long-term debt, carrying amount 2,905
PGS [Member]  
Debt Instrument [Line Items]  
2022 25
2023 0
2024 0
2025 0
2026 0
Thereafter 495
Long-term debt, carrying amount $ 520