Segment Information (Tables)

3 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Schedule of Segment Information

(millions)	Tampa								Tampa Electric
Three months ended March 31,	Electric		PGS		Eliminations				Company
2018
Revenues - external	$	461	$	136	$	0			$	597
Intracompany sales		0		6		(6	)			0
Total revenues		461		142		(6	)			597
Total interest charges		26		4		0				30
Net income	$	48	$	15	$	0			$	63
2017
Revenues - external	$	442	$	111	$	0			$	553
Intracompany sales		0		1		(1	)			0
Total revenues		442		112		(1	)			553
Total interest charges		25		4		0				29
Net income	$	42	$	14	$	0			$	56
Total assets at March 31, 2018	$	7,596	$	1,297	$	(498	)	(1)	$	8,395
Total assets at December 31, 2017	$	7,635	$	1,284	$	(555	)	(1)	$	8,364

(1) Amounts relate to consolidated deferred tax reclassifications. Deferred tax assets are reclassified and netted with deferred tax liabilities upon consolidation.