Consolidated Condensed Statements of Income (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenues
Regulated electric and gas	$ 639.6	$ 670.1	$ 1,782.7	$ 1,826.8
Unregulated	126.3	188.5	380.2	481.4
Total revenues	765.9	858.6	2,162.9	2,308.2
Expenses
Fuel	202.8	209.1	517.3	534.5
Purchased power	15.7	25.8	50.8	85.2
Cost of natural gas sold	26.7	40.5	116.9	118.5
Other	127.0	115.4	377.4	342.2
Operation and maintenance other expense
Mining related costs	108.3	141.5	314.0	358.7
Other	3.6	1.5	8.3	4.4
Depreciation and amortization	85.4	83.4	251.3	246.9
Taxes, other than income	55.9	58.3	162.8	170.8
Total expenses	625.4	675.5	1,798.8	1,861.2
Income from continuing operations	140.5	183.1	364.1	447.0
Other income
Allowance for other funds used during construction	1.8	0.7	4.3	1.6
Other income	(0.3)	2.7	2.9	5.8
Total other income	1.5	3.4	7.2	7.4
Interest charges
Interest expense	42.6	45.0	129.1	141.7
Allowance for borrowed funds used during construction	(1.1)	(0.4)	(2.5)	(0.9)
Total interest charges	41.5	44.6	126.6	140.8
Income from continuing operations before provision for income taxes	100.5	141.9	244.7	313.6
Provision for income taxes	37.6	51.7	89.0	113.2
Net income from continuing operations	62.9	90.2	155.7	200.4
Discontinued operations
Loss from discontinued operations	(0.2)	(27.4)	0	(7.9)
(Benefit) Provision for income taxes	(0.1)	18.7	0	24.6
Loss from discontinued operations, net	(0.1)	(46.1)	0	(32.5)
Less: Income from discontinued operations attributable to noncontrolling interest	0	0.1	0	0.3
Loss from discontinued operations attributable to TECO Energy, net	(0.1)	(46.2)	0	(32.8)
Net income attributable to TECO Energy	$ 62.8	$ 44.0	$ 155.7	$ 167.6
Average common shares outstanding - Basic	215.2	214.5	214.9	214.2
Average common shares outstanding - Diluted	215.6	215.4	215.4	215.3
Earnings per share from continuing operations - Basic	$ 0.29	$ 0.42	$ 0.72	$ 0.93
Earnings per share from continuing operations - Diluted	$ 0.29	$ 0.42	$ 0.72	$ 0.93
Earnings per share from discontinued operations - Basic	$ 0.00	$ (0.22)	$ 0.00	$ (0.15)
Earnings per share from discontinued operations - Diluted	$ 0.00	$ (0.22)	$ 0.00	$ (0.15)
Earnings per share attributable to TECO Energy - Basic	$ 0.29	$ 0.20	$ 0.72	$ 0.78
Earnings per share attributable to TECO Energy - Diluted	$ 0.29	$ 0.20	$ 0.72	$ 0.78
Dividends paid per common share outstanding	$ 0.22	$ 0.22	$ 0.66	$ 0.66