Long-Term Debt	6 Months Ended
Jun. 30, 2022
Debt Disclosure [Abstract]
Long-Term Debt	7. Long-Term Debt Fair Value of Long-Term Debt At June 30, 2022, TEC’s long-term debt, including the current portion, had a carrying amount of $3,857 million and an estimated fair market value of $3,605 million. At December 31, 2021, TEC’s total long-term debt, including the current portion, had a carrying amount of $3,386 million and an estimated fair market value of $4,036 million. The fair value of the debt securities is determined using Level 2 measurements (see Note 11 for information regarding the fair value hierarchy). TEC 3.875% Notes due 2024 and 5.00% Notes due 2052 On July 12, 2022, TEC completed a sale of (i) $300 million aggregate principal amount of 3.875% Notes due July 12, 2024 (the 2024 Notes) and (ii) $300 million aggregate principal amount of 5.00% Notes due July 15, 2052 (the 2052 Notes, and collectively, the Notes). Until July 12, 2024, in the case of the 2024 Notes, or January 15, 2052, in the case of the 2052 Notes, TEC may redeem all or any part of such series of Notes at its option at a redemption price equal to the greater of (i) 100% of the principal amount of such series of Notes to be redeemed or (ii) the sum of the present values of the remaining payments of principal and interest on the Notes to be redeemed that would be due if the Notes matured on (a) July 12, 2024, in the case of the 2024 Notes, discounted to the redemption date on a semiannual basis at the applicable treasury rate (as defined in the Indenture), plus 15 basis points, or (b) January 15, 2052, in the case of the 2052 Notes, discounted to the redemption date on a semiannual basis at the applicable treasury rate, plus 30 basis points; in either case, the redemption price would include accrued and unpaid interest to the redemption date. At any time on or after January 15, 2052, in the case of the 2052 Notes, TEC may, at its option, redeem such series of the Notes, in whole or in part, at 100% of the principal amount of such series of the Notes being redeemed plus accrued and unpaid interest thereon to, but excluding, the date of redemption. The proceeds were used for general corporate purposes and to repay TEC’s $470 million commercial paper outstanding at June 30, 2022. Therefore, the $470 million commercial paper balance was classified as long-term debt on TEC’s consolidated balance sheet as of June 30, 2022.

Long-Term Debt

6 Months Ended

Jun. 30, 2022

7. Long-Term Debt

Fair Value of Long-Term Debt

At June 30, 2022, TEC’s long-term debt, including the current portion, had a carrying amount of $3,857 million and an estimated fair market value of $3,605 million. At December 31, 2021, TEC’s total long-term debt, including the current portion, had a carrying amount of $3,386 million and an estimated fair market value of $4,036 million. The fair value of the debt securities is determined using Level 2 measurements (see Note 11 for information regarding the fair value hierarchy).

TEC 3.875% Notes due 2024 and 5.00% Notes due 2052

On July 12, 2022, TEC completed a sale of (i) $300 million aggregate principal amount of 3.875% Notes due July 12, 2024 (the 2024 Notes) and (ii) $300 million aggregate principal amount of 5.00% Notes due July 15, 2052 (the 2052 Notes, and collectively, the Notes). Until July 12, 2024, in the case of the 2024 Notes, or January 15, 2052, in the case of the 2052 Notes, TEC may redeem all or any part of such series of Notes at its option at a redemption price equal to the greater of (i) 100% of the principal amount of such series of Notes to be redeemed or (ii) the sum of the present values of the remaining payments of principal and interest on the Notes to be redeemed that would be due if the Notes matured on (a) July 12, 2024, in the case of the 2024 Notes, discounted to the redemption date on a semiannual basis at the applicable treasury rate (as defined in the Indenture), plus 15 basis points, or (b) January 15, 2052, in the case of the 2052 Notes, discounted to the redemption date on a semiannual basis at the applicable treasury rate, plus 30 basis points; in either case, the redemption price would include accrued and unpaid interest to the redemption date. At any time on or after January 15, 2052, in the case of the 2052 Notes, TEC may, at its option, redeem such series of the Notes, in whole or in part, at 100% of the principal amount of such series of the Notes being redeemed plus accrued and unpaid interest thereon to, but excluding, the date of redemption. The proceeds were used for general corporate purposes and to repay TEC’s $470 million commercial paper outstanding at June 30, 2022. Therefore, the $470 million commercial paper balance was classified as long-term debt on TEC’s consolidated balance sheet as of June 30, 2022.