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Short-Term Debt (Tables)

6 Months Ended

Jun. 30, 2018

Debt Disclosure [Abstract]

Short-Term Debt Credit Facilities and Related Borrowings

Details of the credit facilities and related borrowings are presented in the following table:


	June 30, 2018												December 31, 2017
									Letters												Letters
	Credit				Borrowings				of Credit				Credit				Borrowings				of Credit
(millions)	Facilities				Outstanding ⁽¹⁾				Outstanding				Facilities				Outstanding ⁽¹⁾				Outstanding
Tampa Electric Company:
5-year facility ⁽²⁾	$	325			$	0			$	1			$	325			$	5			$	1
3-year accounts receivable facility ⁽³⁾		150				75				0				150				0				0
1-year term facility ⁽⁴⁾		300				300				0				300				300				0
Total	$	775			$	375			$	1			$	775			$	305			$	1

(1)	Borrowings outstanding are reported as notes payable.

(2)	This 5-year facility matures March 22, 2022.

(3)	This 3-year facility matures March 22, 2021.

(4)	This 1-year facility matures on November 1, 2018.