Consolidated Statements of Capitalization - Long-term Debt Maturities $ in Millions	Dec. 31, 2024 USD ($)
Debt Instrument [Line Items]
Total Long-Term Debt	$ 3,975
Long Term Debt Maturities
Debt Instrument [Line Items]
2025	0
2026	500
2027	0
2028	0
2029	0
Thereafter	3,475
Total Long-Term Debt	3,975
Tampa Electric [Member]
Debt Instrument [Line Items]
Total Long-Term Debt	$ 3,975

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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