CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012
Cash Flows from Operating Activities
Net income (loss)	$ 1,229		$ 1,171
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Depreciation	859		813
Amortization	164		144
Defined benefit plans - expense	135		123
Deferred income taxes and investment tax credits	301		298
Unrealized (gains) losses on derivatives, and other hedging activities	126		21
Other	92		34
Change in current assets and current liabilities
Accounts receivable	(79)		19
Accounts payable	(140)		(175)
Unbilled revenues	197		121
Counterparty collateral	(77)		13
Taxes payable	76		29
Unrecognized tax positions	(104)		(4)
Accrued interest	8		43
Other	(111)		8
Other operating activities
Defined benefit plans - funding	(505)		(526)
Other assets	(59)		1
Other liabilities	111		(39)
Net cash provided by (used in) operating activities	2,223		2,094
Cash Flows from Investing Activities
Expenditures for property, plant and equipment	(2,768)		(2,078)
Ironwood Acquisition, net of cash acquired			(84)
Purchases of nuclear plant decommissioning trust investments	(102)		(112)
Proceeds from the sale of nuclear plant decommissioning trust investments	92		102
Net (increase) decrease in restricted cash and cash equivalents	13		62
Other investing activities	(23)		(6)
Net cash provided by (used in) investing activities	(2,788)		(2,116)
Cash Flows from Financing Activities
Issuance of long-term debt	862		824
Retirement of long-term debt	(309)		(105)
Repurchase of common stock	(74)
Issuance of common stock	1,409		54
Payment of common stock dividends	(645)		(623)
Redemption of preference stock of a subsidiary			(250)
Debt issuance and credit facility costs	(37)		(10)
Contract adjustment payments	(72)		(71)
Net increase (decrease) in short-term debt	(148)		(51)
Other financing activities	(20)		(8)
Net cash provided by (used in) financing activities	966		(240)
Effect of Exchange Rates on Cash and Cash Equivalents	(11)		6
Net Increase (Decrease) in Cash and Cash Equivalents	390		(256)
Cash and Cash Equivalents at Beginning of Period	901		1,202
Cash and Cash Equivalents at End of Period	1,291		946
PPL Energy Supply LLC [Member]
Cash Flows from Operating Activities
Net income (loss)	173		383
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Depreciation	237		206
Amortization	111		93
Defined benefit plans - expense	39		33
Deferred income taxes and investment tax credits	112		132
Unrealized (gains) losses on derivatives, and other hedging activities	98		(37)
Other	32		33
Change in current assets and current liabilities
Accounts receivable	71		(26)
Accounts payable	(131)		(110)
Unbilled revenues	135		78
Fuel, materials and supplies	(18)		(20)
Counterparty collateral	(77)		12
Other	(32)		(28)
Other operating activities
Defined benefit plans - funding	(107)		(70)
Other assets	(32)		(16)
Other liabilities	(28)		11
Net cash provided by (used in) operating activities	583		674
Cash Flows from Investing Activities
Expenditures for property, plant and equipment	(341)		(460)
Ironwood Acquisition, net of cash acquired			(84)
Expenditures for intangible assets	(33)		(36)
Purchases of nuclear plant decommissioning trust investments	(102)		(112)
Proceeds from the sale of nuclear plant decommissioning trust investments	92		102
Net (increase) decrease in notes receivable from affiliates			198
Net (increase) decrease in restricted cash and cash equivalents	9		70
Other investing activities	24		14
Net cash provided by (used in) investing activities	(351)		(308)
Cash Flows from Financing Activities
Retirement of long-term debt	(309)		(6)
Contributions from member	980		472
Distributions to member	(408)		(733)
Net increase (decrease) in short-term debt	(356)		(45)
Other financing activities	(1)		(1)
Net cash provided by (used in) financing activities	(94)		(313)
Net Increase (Decrease) in Cash and Cash Equivalents	138		53
Cash and Cash Equivalents at Beginning of Period	413		379
Cash and Cash Equivalents at End of Period	551		432
PPL Electric Utilities Corp [Member]
Cash Flows from Operating Activities
Net income (loss)	160	[1]	99	[1]
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Depreciation	132		119
Amortization	13		13
Defined benefit plans - expense	16		17
Deferred income taxes and investment tax credits	103		72
Other	2		3
Change in current assets and current liabilities
Accounts receivable	(14)		48
Accounts payable	(51)		(43)
Unbilled revenues	34		18
Taxes payable	24
Other	(19)		(4)
Other operating activities
Defined benefit plans - funding	(88)		(54)
Other assets	6
Other liabilities	9		(27)
Net cash provided by (used in) operating activities	327		261
Cash Flows from Investing Activities
Expenditures for property, plant and equipment	(688)		(407)
Net (increase) decrease in notes receivable from affiliates			(210)
Other investing activities	(9)		3
Net cash provided by (used in) investing activities	(697)		(614)
Cash Flows from Financing Activities
Issuance of long-term debt	348		249
Redemption of preference stock of a subsidiary			(250)
Payment of common stock dividends to parent	(94)		(75)
Contributions from member	205		150
Other financing activities	(4)		(10)
Net cash provided by (used in) financing activities	455		64
Net Increase (Decrease) in Cash and Cash Equivalents	85		(289)
Cash and Cash Equivalents at Beginning of Period	140		320
Cash and Cash Equivalents at End of Period	225		31
LG And E And KU Energy LLC [Member]
Cash Flows from Operating Activities
Net income (loss)	260	[1]	180	[1]
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Depreciation	249		259
Amortization	19		20
Defined benefit plans - expense	38		30
Deferred income taxes and investment tax credits	99		92
Other	6		(5)
Change in current assets and current liabilities
Accounts receivable	(78)		(25)
Accounts payable	34		4
Accounts payable to affiliates	1
Unbilled revenues	19		26
Fuel, materials and supplies	1		4
Income tax receivable			3
Taxes payable	83		51
Accrued interest	30		29
Other			19
Other operating activities
Defined benefit plans - funding	(159)		(66)
Settlement of interest rate swaps	98
Other assets	(1)		(3)
Other liabilities	14		28
Net cash provided by (used in) operating activities	713		646
Cash Flows from Investing Activities
Expenditures for property, plant and equipment	(891)		(525)
Net (increase) decrease in notes receivable from affiliates			9
Net (increase) decrease in restricted cash and cash equivalents	10		(3)
Other investing activities	2
Net cash provided by (used in) investing activities	(879)		(519)
Cash Flows from Financing Activities
Contributions from member	146
Distributions to member	(116)		(95)
Debt issuance and credit facility costs			(1)
Net increase (decrease) in notes payable to affiliates	27
Net increase (decrease) in short-term debt	87
Net cash provided by (used in) financing activities	144		(96)
Net Increase (Decrease) in Cash and Cash Equivalents	(22)		31
Cash and Cash Equivalents at Beginning of Period	43		59
Cash and Cash Equivalents at End of Period	21		90
Louisville Gas And Electric Co [Member]
Cash Flows from Operating Activities
Net income (loss)	122	[2]	94	[2]
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Depreciation	110		114
Amortization	9		8
Defined benefit plans - expense	13		14
Deferred income taxes and investment tax credits	22		40
Other	10		(11)
Change in current assets and current liabilities
Accounts receivable	(20)		(5)
Accounts payable	18		2
Accounts payable to affiliates	7
Unbilled revenues	10		16
Fuel, materials and supplies	2		(10)
Taxes payable	32		21
Other	12		13
Other operating activities
Defined benefit plans - funding	(45)		(26)
Settlement of interest rate swaps	49
Other assets	(1)		(2)
Other liabilities	2		(1)
Net cash provided by (used in) operating activities	352		267
Cash Flows from Investing Activities
Expenditures for property, plant and equipment	(376)		(193)
Net (increase) decrease in restricted cash and cash equivalents	10		(3)
Net cash provided by (used in) investing activities	(366)		(196)
Cash Flows from Financing Activities
Payment of common stock dividends to parent	(67)		(47)
Contributions from member	54
Debt issuance and credit facility costs			(1)
Net increase (decrease) in short-term debt	17
Net cash provided by (used in) financing activities	4		(48)
Net Increase (Decrease) in Cash and Cash Equivalents	(10)		23
Cash and Cash Equivalents at Beginning of Period	22		25
Cash and Cash Equivalents at End of Period	12		48
Kentucky Utilities Co [Member]
Cash Flows from Operating Activities
Net income (loss)	171	[2]	118	[2]
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Depreciation	138		145
Amortization	9		9
Defined benefit plans - expense	16		9
Deferred income taxes and investment tax credits	73		78
Other	(3)		1
Change in current assets and current liabilities
Accounts receivable	(46)		(34)
Accounts payable	25		9
Accounts payable to affiliates	(9)		(4)
Unbilled revenues	9		10
Fuel, materials and supplies	(1)		16
Taxes payable	39		26
Accrued interest	15		14
Other	(3)		18
Other operating activities
Defined benefit plans - funding	(62)		(20)
Settlement of interest rate swaps	49
Other assets	(2)		(1)
Other liabilities	1		16
Net cash provided by (used in) operating activities	419		410
Cash Flows from Investing Activities
Expenditures for property, plant and equipment	(512)		(331)
Other investing activities	2
Net cash provided by (used in) investing activities	(510)		(331)
Cash Flows from Financing Activities
Payment of common stock dividends to parent	(83)		(68)
Contributions from member	92
Net increase (decrease) in short-term debt	70
Net cash provided by (used in) financing activities	79		(68)
Net Increase (Decrease) in Cash and Cash Equivalents	(12)		11
Cash and Cash Equivalents at Beginning of Period	21		31
Cash and Cash Equivalents at End of Period	$ 9		$ 42

[1] Net income approximates comprehensive income.

[2] Net income equals comprehensive income.