Consolidated Condensed Statements Of Income And Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
Revenues
Total revenues	$ 788.4		$ 885.7		$ 1,518.4		$ 1,681.8
Expenses
Total expenses	626.8		714.6		1,231.6		1,379.8
Fuel	167.9		194.2		325.4		339.1
Purchased power	31.2		43.9		59.4		71.1
Cost of natural gas sold	36.4		54.1		78.0		136.1
Other	85.6		82.1		168.9		160.4
Maintenance	43.8		48.5		87.8		97.3
Depreciation and amortization	84.2		81.2		167.2		161.0
Taxes, other than income	57.1		55.5		113.1		114.2
Income from operations	161.6		171.1		286.8		302.0
Other income	1.9		1.5		3.9		3.0
Allowance for other funds used during construction	0.5		0.3		0.9		0.6
Total other income	2.4		1.8		4.8		3.6
Interest charges
Interest on long-term debt	50.3		51.3		100.9		104.1
Allowance for borrowed funds used during construction	(0.3)		(0.1)		(0.5)		(0.3)
Total interest charges	50.0	[1]	51.2	[1]	100.4	[1]	103.8	[1]
Net income	73.1		77.5		123.6		129.2
Other comprehensive income (loss), net of tax
Net unrealized (loss) gain on cash flow hedges	(7.4)		(1.4)		(5.9)		0.9
Total Other comprehensive (loss) income, Net	(6.9)		(1.0)		(5.3)		1.7
Comprehensive income	66.2		76.5		118.3		130.9
Tampa Electric Co [Member]
Revenues
Electric (includes franchise fees and gross receipts taxes of $23.4 in 2012 and $21.3 in 2011)	506.6		546.4		953.2		979.4
Gas (includes franchise fees and gross receipts taxes of $11.1 in 2012 and $14.9 in 2011)	93.8		110.4		203.7		264.7
Total revenues	600.4		656.8		1,156.9		1,244.1
Expenses
Total expenses	506.2		558.5		986.6		1,064.7
Fuel	167.9		194.2		325.4		339.1
Purchased power	31.2		43.9		59.4		71.1
Cost of natural gas sold	36.5		54.2		78.1		136.2
Other	85.6		82.0		168.7		160.2
Maintenance	28.6		31.6		57.6		63.1
Depreciation and amortization	72.0		67.3		142.0		134.0
Taxes, federal and state	37.5		40.4		63.1		69.5
Taxes, other than income	46.9		44.9		92.3		91.5
Income from operations	94.2		98.3		170.3		179.4
Other income
Allowance for other funds used during construction	0.5		0.3		0.9		0.6
Taxes, non-utility federal and state	(0.1)		(0.2)		(0.3)		(0.4)
Other income, net	0.4		0.7		0.9		1.2
Total other income	0.8		0.8		1.5		1.4
Interest charges
Interest on long-term debt	31.3		32.1		63.0		64.8
Other interest	3.0		2.8		5.9		5.7
Allowance for borrowed funds used during construction	(0.3)		(0.1)		(0.5)		(0.3)
Total interest charges	34.0		34.8		68.4		70.2
Net income	61.0		64.3		103.4		110.6
Other comprehensive income (loss), net of tax
Net unrealized (loss) gain on cash flow hedges	(4.7)		0.2		(4.5)		0.3
Total Other comprehensive (loss) income, Net	(4.7)		0.2		(4.5)		0.3
Comprehensive income	$ 56.3		$ 64.5		$ 98.9		$ 110.9

[1] Segment net income is reported on a basis that includes internally allocated financing costs. Total interest charges include internally allocated interest costs that for January 2012 through June 2012 were at a pretax rate of 6.00% and for 2011 were at a pretax rate of 6.25% based on an average of each subsidiary's equity and indebtedness to TECO Energy assuming a 50/50 debt/equity capital structure.