Subsequent Events	6 Months Ended
Jun. 30, 2021
Subsequent Events [Abstract]
Subsequent Events	12. Subsequent Events On August 6, 2021, TEC filed with the FPSC a joint motion for approval of a settlement agreement dated as of August 6, 2021 by and among TEC and the intervenors in TEC’s rate case filed with the FPSC in April 2021. In addition, on August 3, 2021, the FPSC approved Tampa Electric’s request for a mid-course adjustment to its fuel and capacity charges, effective with September 2021 customer bills. See Note 3 – Tampa Electric Base Rates, Tampa Electric Big Bend Modernization Project and Tampa Electric Mid-Course Adjustment to Fuel Recovery for further information.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

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