CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012
Cash Flows from Operating Activities
Net income (loss)	$ 818		$ 816
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Depreciation	570		535
Amortization	113		88
Defined benefit plans - expense	91		84
Deferred income taxes and investment tax credits	291		364
Unrealized (gains) losses on derivatives, and other hedging activities	(11)		(209)
Other	50		25
Change in current assets and current liabilities
Accounts receivable	(189)		21
Accounts payable	(75)		(126)
Unbilled revenues	144		72
Prepayments	(64)		(97)
Counterparty collateral	(61)		57
Taxes	128		29
Unrecognized tax positions	(98)		(4)
Accrued interest	(119)		(87)
Other	(113)		(67)
Other operating activities
Defined benefit plans - funding	(468)		(493)
Other assets	(64)		(16)
Other liabilities	4		(45)
Net cash provided by (used in) operating activities	947		947
Cash Flows from Investing Activities
Expenditures for property, plant and equipment	(1,797)		(1,309)
Ironwood Acquisition, net of cash acquired			(84)
Purchases of nuclear plant decommissioning trust investments	(66)		(85)
Proceeds from the sale of nuclear plant decommissioning trust investments	59		79
Net (increase) decrease in restricted cash and cash equivalents	(17)		54
Other investing activities	(13)		(8)
Net cash provided by (used in) investing activities	(1,834)		(1,353)
Cash Flows from Financing Activities
Issuance of long-term debt	450		575
Repurchase of common stock	(28)
Issuance of common stock	259		35
Payment of common stock dividends	(426)		(413)
Redemption of preference stock of a subsidiary			(250)
Debt issuance and credit facility costs	(33)		(9)
Contract adjustment payments	(48)		(48)
Net increase (decrease) in short-term debt	563		311
Other financing activities	(27)		(10)
Net cash provided by (used in) financing activities	710		191
Effect of Exchange Rates on Cash and Cash Equivalents	(13)		(6)
Net Increase (Decrease) in Cash and Cash Equivalents	(190)		(221)
Cash and Cash Equivalents at Beginning of Period	901		1,202
Cash and Cash Equivalents at End of Period	711		981
PPL Energy Supply LLC [Member]
Cash Flows from Operating Activities
Net income (loss)	48		328
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Depreciation	157		133
Amortization	71		57
Defined benefit plans - expense	26		22
Deferred income taxes and investment tax credits	98		165
Unrealized (gains) losses on derivatives, and other hedging activities	91		(216)
Other	24		28
Change in current assets and current liabilities
Accounts receivable	6		(2)
Accounts payable	(81)		(57)
Unbilled revenues	96		61
Fuel, materials and supplies	5		(74)
Prepayments	(67)		(30)
Counterparty collateral	(61)		57
Other	(22)		(68)
Other operating activities
Defined benefit plans - funding	(106)		(69)
Other assets	(38)		(19)
Other liabilities	(20)		(8)
Net cash provided by (used in) operating activities	227		308
Cash Flows from Investing Activities
Expenditures for property, plant and equipment	(241)		(316)
Ironwood Acquisition, net of cash acquired			(84)
Expenditures for intangible assets	(23)		(25)
Purchases of nuclear plant decommissioning trust investments	(66)		(85)
Proceeds from the sale of nuclear plant decommissioning trust investments	59		79
Net (increase) decrease in notes receivable from affiliates	(4)		198
Net (increase) decrease in restricted cash and cash equivalents	(24)		57
Other investing activities	17		3
Net cash provided by (used in) investing activities	(282)		(173)
Cash Flows from Financing Activities
Retirement of long-term debt	(9)		(3)
Contributions from member	105		472
Distributions to member	(408)		(657)
Net increase (decrease) in short-term debt	219		120
Net cash provided by (used in) financing activities	(93)		(68)
Net Increase (Decrease) in Cash and Cash Equivalents	(148)		67
Cash and Cash Equivalents at Beginning of Period	413		379
Cash and Cash Equivalents at End of Period	265		446
PPL Electric Utilities Corp [Member]
Cash Flows from Operating Activities
Net income (loss)	109	[1]	66	[1]
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Depreciation	87		78
Amortization	10		9
Defined benefit plans - expense	10		11
Deferred income taxes and investment tax credits	81		59
Other	3		5
Change in current assets and current liabilities
Accounts receivable	(56)		19
Accounts payable	(45)		(37)
Unbilled revenues	36		11
Prepayments	(18)		(18)
Taxes	18
Other	(38)		(23)
Other operating activities
Defined benefit plans - funding	(88)		(54)
Other assets			2
Other liabilities	6		(27)
Net cash provided by (used in) operating activities	115		101
Cash Flows from Investing Activities
Expenditures for property, plant and equipment	(451)		(256)
Other investing activities	(4)		(1)
Net cash provided by (used in) investing activities	(455)		(257)
Cash Flows from Financing Activities
Contributions from parent	205
Redemption of preference stock of a subsidiary			(250)
Payment of common stock dividends to parent	(66)		(56)
Net increase (decrease) in short-term debt	85		195
Other financing activities			(8)
Net cash provided by (used in) financing activities	224		(119)
Net Increase (Decrease) in Cash and Cash Equivalents	(116)		(275)
Cash and Cash Equivalents at Beginning of Period	140		320
Cash and Cash Equivalents at End of Period	24		45
LG And E And KU Energy LLC [Member]
Cash Flows from Operating Activities
Net income (loss)	160	[1]	97	[1]
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Depreciation	165		172
Amortization	14		14
Defined benefit plans - expense	27		20
Deferred income taxes and investment tax credits	95		56
Other	(6)		(2)
Change in current assets and current liabilities
Accounts receivable	(62)		(11)
Accounts payable	36		17
Unbilled revenues	(2)		1
Fuel, materials and supplies	25		1
Taxes			33
Other	2		(6)
Other operating activities
Defined benefit plans - funding	(156)		(62)
Other assets	(3)
Other liabilities	2		24
Net cash provided by (used in) operating activities	297		354
Cash Flows from Investing Activities
Expenditures for property, plant and equipment	(579)		(324)
Net (increase) decrease in notes receivable from affiliates			3
Net (increase) decrease in restricted cash and cash equivalents	10		(2)
Other investing activities	1
Net cash provided by (used in) investing activities	(568)		(323)
Cash Flows from Financing Activities
Contributions from member	146
Distributions to member	(69)		(60)
Debt issuance and credit facility costs			(1)
Net increase (decrease) in notes payable to affiliates	47
Net increase (decrease) in short-term debt	127
Net cash provided by (used in) financing activities	251		(61)
Net Increase (Decrease) in Cash and Cash Equivalents	(20)		(30)
Cash and Cash Equivalents at Beginning of Period	43		59
Cash and Cash Equivalents at End of Period	23		29
Louisville Gas And Electric Co [Member]
Cash Flows from Operating Activities
Net income (loss)	73	[2]	51	[2]
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Depreciation	73		76
Amortization	6		6
Defined benefit plans - expense	9		9
Deferred income taxes and investment tax credits	21		28
Other			(6)
Change in current assets and current liabilities
Accounts receivable	(9)		(7)
Accounts payable	13		11
Accounts payable to affiliates	(2)		(10)
Unbilled revenues	2		6
Fuel, materials and supplies	25		6
Taxes	12		15
Other	6
Other operating activities
Defined benefit plans - funding	(44)		(25)
Other assets	(1)		(1)
Other liabilities	2		1
Net cash provided by (used in) operating activities	186		160
Cash Flows from Investing Activities
Expenditures for property, plant and equipment	(236)		(120)
Net (increase) decrease in notes receivable from affiliates			(6)
Net (increase) decrease in restricted cash and cash equivalents	10		(2)
Net cash provided by (used in) investing activities	(226)		(128)
Cash Flows from Financing Activities
Contributions from parent	54
Payment of common stock dividends to parent	(48)		(31)
Debt issuance and credit facility costs			(1)
Net increase (decrease) in short-term debt	25
Net cash provided by (used in) financing activities	31		(32)
Net Increase (Decrease) in Cash and Cash Equivalents	(9)
Cash and Cash Equivalents at Beginning of Period	22		25
Cash and Cash Equivalents at End of Period	13		25
Kentucky Utilities Co [Member]
Cash Flows from Operating Activities
Net income (loss)	108	[1]	68	[1]
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Depreciation	92		96
Amortization	7		7
Defined benefit plans - expense	12		5
Deferred income taxes and investment tax credits	72		53
Other	(2)
Change in current assets and current liabilities
Accounts receivable	(39)		(20)
Accounts payable	33		12
Accounts payable to affiliates	(7)		1
Unbilled revenues	(4)		(5)
Fuel, materials and supplies			(3)
Taxes	(10)		12
Other	5		(1)
Other operating activities
Defined benefit plans - funding	(61)		(18)
Other assets	(3)
Other liabilities	(13)		10
Net cash provided by (used in) operating activities	190		217
Cash Flows from Investing Activities
Expenditures for property, plant and equipment	(341)		(203)
Other investing activities	1
Net cash provided by (used in) investing activities	(340)		(203)
Cash Flows from Financing Activities
Contributions from parent	92
Payment of common stock dividends to parent	(55)		(48)
Net increase (decrease) in notes payable to affiliates			6
Net increase (decrease) in short-term debt	102
Net cash provided by (used in) financing activities	139		(42)
Net Increase (Decrease) in Cash and Cash Equivalents	(11)		(28)
Cash and Cash Equivalents at Beginning of Period	21		31
Cash and Cash Equivalents at End of Period	$ 10		$ 3

[1] Net income approximates comprehensive income.

[2] Net income equals comprehensive income.