Segment Information

12 Months Ended

Dec. 31, 2017

Segment Reporting [Abstract]

Segment Information

11. Segment Information

Segments are determined based on how management evaluates, measures and makes decisions with respect to the operations of the entity. Management reports segments based on each segment’s contribution of revenues, net income and total assets as required by the accounting guidance for disclosures about segments of an enterprise and related information. All significant intercompany transactions are eliminated in the Consolidated Financial Statements of TEC, but are included in determining reportable segments.

TEC is a public utility operating within the State of Florida. Through its Tampa Electric division, it is engaged in the generation, purchase, transmission, distribution and sale of electric energy to approximately 750,000 customers in West Central Florida. Its PGS division is engaged in the purchase, distribution and marketing of natural gas for approximately 375,000 residential, commercial, industrial and electric power generation customers in the State of Florida.

	Tampa
(millions)	Electric		PGS		Eliminations				TEC
2017
Revenues - external	$	2,052	$	418	$	0			$	2,470
Sales to affiliates		2		20		(22	)			0
Total revenues		2,054		438		(22	)			2,470
Depreciation and amortization		300		50		0				350
Total interest charges		104		15		0				119
Provision for income taxes		171		26		0				197
Net income		273		43		0				316
Total assets		7,635		1,284		(555	)	(1)		8,364
Capital expenditures		518		122		0				640
2016
Revenues - external	$	1,964	$	432	$	0			$	2,396
Sales to affiliates		1		7		(8	)			0
Total revenues		1,965		439		(8	)			2,396
Depreciation and amortization		268		60		0				328
Total interest charges		91		15		0				106
Provision for income taxes		130		22		0				152
Net income		251		35		0				286
Total assets		7,357		1,191		(465	)	(1)		8,083
Capital expenditures		594		133		0				727
2015
Revenues - external	$	2,018	$	401	$	0			$	2,419
Sales to affiliates		0		6		(6	)			0
Total revenues		2,018		407		(6	)			2,419
Depreciation and amortization		256		57		0				313
Total interest charges		95		15		0				110
Provision for income taxes		144		22		0				166
Net income		241		35		0				276
Total assets		7,004		1,136		(431	)	(1)		7,709
Capital expenditures		593		94		0				687

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