Revenue (Tables)

3 Months Ended

Mar. 31, 2018

Revenue Recognition [Abstract]

Summary of Disaggregates TEC Revenue by Major Source

The following disaggregates TEC’s revenue by major source for the three months ended March 31, 2018:

(millions)	Tampa								Tampa Electric
Three months ended March 31, 2018	Electric			PGS		Eliminations			Company
Electric revenue
Residential	$	230		$	0	$	0		$	230
Commercial		132			0		0			132
Industrial		38			0		0			38
Regulatory deferrals and unbilled revenue		(1	)		0		0			(1	)
Other (1)		62			0		0			62
Total electric revenue		461			0		0			461
Gas revenue
Residential		0			56		0			56
Commercial		0			44		0			44
Industrial (2)		0			5		0			5
Other (3)		0			37		(6	)		31
Total gas revenue		0			142		(6	)		136
Total revenue	$	461		$	142	$	(6	)	$	597

(1)    Other includes sales to public authorities, off-system sales to other utilities and various other items.

(2)    Industrial includes sales to power generation customers.

(3)    Other includes off-system sales to other utilities and various other items.