Consolidated Condensed Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows from operating activities
Net income	$ 69.8	$ 108.5
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	173.3	169.1
Depreciation and amortization	172.5	151.4
Deferred income taxes and investment tax credits	46.9	61.8
Allowance for other funds used during construction	(7.5)	(4.4)
Non-cash stock compensation	6.9	7.1
Gain on sales of business/assets	0.0	(0.1)
Deferred recovery clauses	(4.1)	(14.4)
Asset impairment, pretax	78.6	0.0
Receivables, less allowance for uncollectibles	39.8	(36.6)
Inventories	(37.2)	(16.2)
Prepayments and other current assets	(12.2)	(2.1)
Taxes accrued	19.0	34.3
Interest accrued	(1.8)	2.5
Accounts payable	(58.3)	(36.0)
Other	(16.4)	(12.5)
Cash flows from operating activities	296.8	261.0
Cash flows from investing activities
Capital expenditures	(343.2)	(320.3)
Allowance for other funds used during construction	7.5	4.4
Other investing activities	(0.1)	0.3
Cash flows used in investing activities	(335.8)	(315.6)
Cash flows from financing activities
Dividends	(105.9)	(95.9)
Proceeds from the sale of common stock	3.5	3.0
Proceeds from long-term debt issuance	500.0	296.6
Repayment of long-term debt	(274.5)	(83.3)
Net decrease in short-term debt	(53.5)	(84.0)
Cash flows from financing activities	69.6	36.4
Net increase (decrease) in cash and cash equivalents	30.6	(18.2)
Cash and cash equivalents at beginning of the period	25.4	185.2
Cash and cash equivalents at end of the period	56.0	167.0
Supplemental disclosure of non-cash activities
Change in accrued capital expenditures	1.6	8.6
Tampa Electric Company [Member]
Cash flows from operating activities
Net income	138.1	129.5
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	154.8	150.5
Deferred income taxes and investment tax credits	30.0	34.8
Allowance for other funds used during construction	(7.5)	(4.4)
Deferred recovery clauses	(3.2)	(14.4)
Receivables, less allowance for uncollectibles	(24.4)	(29.1)
Inventories	(42.1)	(2.6)
Prepayments	(6.2)	(2.8)
Taxes accrued	93.1	100.5
Interest accrued	2.0	2.2
Accounts payable	(14.3)	(34.3)
Other	(14.9)	(10.6)
Cash flows from operating activities	305.4	319.3
Cash flows from investing activities
Capital expenditures	(319.9)	(312.7)
Allowance for other funds used during construction	7.5	4.4
Net proceeds from sale of assets	0.0	0.1
Cash flows used in investing activities	(312.4)	(308.2)
Cash flows from financing activities
Dividends	(109.5)	(112.0)
Proceeds from the sale of common stock	30.0	17.0
Proceeds from long-term debt issuance	251.3	296.6
Repayment of long-term debt	(83.3)	(83.3)
Net decrease in short-term debt	(58.0)	(84.0)
Cash flows from financing activities	30.5	34.3
Net increase (decrease) in cash and cash equivalents	23.5	45.4
Cash and cash equivalents at beginning of the period	10.4	9.8
Cash and cash equivalents at end of the period	33.9	55.2
Supplemental disclosure of non-cash activities
Change in accrued capital expenditures	$ 1.5	$ 8.6