CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Cash Flows from Operating Activities
Net income (loss)	$ 316		$ 413
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Depreciation	305		284
Amortization	60		64
Defined benefit plans - expense	21		51
Deferred income taxes and investment tax credits	(26)		80
Unrealized (gains) losses on derivatives, and other hedging activities	241		98
Adjustment to WPD line loss accrual	65
Other	33		30
Change in current assets and current liabilities
Accounts receivable	(185)		(187)
Accounts payable	93		(138)
Unbilled revenues	(33)		137
Fuel, materials and supplies	96		55
Prepayments	(70)		(117)
Counterparty collateral	2		(64)
Taxes payable	126		122
Other	(51)		(129)
Other operating activities
Defined benefit plans - funding	(135)		(429)
Other assets	(3)		33
Other liabilities	76		(59)
Net cash provided by (used in) operating activities	931		244
Cash Flows from Investing Activities
Expenditures for property, plant and equipment	(892)		(828)
Purchases of nuclear plant decommissioning trust investments	(32)		(28)
Proceeds from the sale of nuclear plant decommissioning trust investments	27		24
Proceeds from receipt of grants	56		1
Net (increase) decrease in restricted cash and cash equivalents	(334)		(52)
Other investing activities	(8)		(16)
Net cash provided by (used in) investing activities	(1,183)		(899)
Cash Flows from Financing Activities
Issuance of long-term debt			450
Retirement of long-term debt	(239)		(8)
Payment of common stock dividends	(234)		(210)
Net increase (decrease) in short-term debt	878		416
Other financing activities	(13)		(27)
Net cash provided by (used in) financing activities	392		621
Effect of Exchange Rates on Cash and Cash Equivalents	14		(14)
Net Increase (Decrease) in Cash and Cash Equivalents	154		(48)
Cash and Cash Equivalents at Beginning of Period	1,102		901
Cash and Cash Equivalents at End of Period	1,256		853
PPL Energy Supply LLC [Member]
Cash Flows from Operating Activities
Net income (loss)	(66)		(38)
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Depreciation	80		78
Amortization	44		44
Defined benefit plans - expense	8		12
Deferred income taxes and investment tax credits	(121)		(21)
Impairment of assets	18
Unrealized (gains) losses on derivatives, and other hedging activities	229		214
Other	5		5
Change in current assets and current liabilities
Accounts receivable	(15)		71
Accounts payable	153		(94)
Unbilled revenues	(92)		123
Fuel, materials and supplies	43		11
Prepayments	(10)		(104)
Counterparty collateral	2		(64)
Taxes payable	53		37
Other	(22)		(14)
Other operating activities
Defined benefit plans - funding	(30)		(105)
Other assets	(5)		44
Other liabilities	2		(74)
Net cash provided by (used in) operating activities	276		125
Cash Flows from Investing Activities
Expenditures for property, plant and equipment	(88)		(124)
Purchases of nuclear plant decommissioning trust investments	(32)		(28)
Proceeds from the sale of nuclear plant decommissioning trust investments	27		24
Proceeds from receipt of grants	56
Net (increase) decrease in restricted cash and cash equivalents	(344)		(59)
Other investing activities	(8)		(8)
Net cash provided by (used in) investing activities	(389)		(195)
Cash Flows from Financing Activities
Distributions to member	(654)		(313)
Net increase (decrease) in short-term debt	970		125
Other financing activities	(1)		(8)
Net cash provided by (used in) financing activities	315		(196)
Net Increase (Decrease) in Cash and Cash Equivalents	202		(266)
Cash and Cash Equivalents at Beginning of Period	239		413
Cash and Cash Equivalents at End of Period	441		147
PPL Electric Utilities Corp [Member]
Cash Flows from Operating Activities
Net income (loss)	85	[1]	64	[1]
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Depreciation	45		43
Amortization	4		5
Defined benefit plans - expense	3		7
Deferred income taxes and investment tax credits	25		45
Other	(14)		(3)
Change in current assets and current liabilities
Accounts receivable	(107)		(87)
Accounts payable	22		(34)
Prepayments	(61)		(28)
Other	(1)		(6)
Other operating activities
Defined benefit plans - funding	(19)		(88)
Other assets	4		8
Other liabilities	10		(3)
Net cash provided by (used in) operating activities	(4)		(77)
Cash Flows from Investing Activities
Expenditures for property, plant and equipment	(201)		(189)
Net (increase) decrease in notes receivable from affiliates	150
Other investing activities	9		(3)
Net cash provided by (used in) investing activities	(42)		(192)
Cash Flows from Financing Activities
Retirement of long-term debt	(10)
Contributions from parent	65		60
Payment of common stock dividends to parent	(32)		(25)
Net increase (decrease) in short-term debt	40		125
Net cash provided by (used in) financing activities	63		160
Net Increase (Decrease) in Cash and Cash Equivalents	17		(109)
Cash and Cash Equivalents at Beginning of Period	25		140
Cash and Cash Equivalents at End of Period	42		31
LG And E And KU Energy LLC [Member]
Cash Flows from Operating Activities
Net income (loss)	115	[1]	96	[1]
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Depreciation	86		82
Amortization	6		7
Defined benefit plans - expense	8		17
Deferred income taxes and investment tax credits	74		45
Other	(1)		1
Change in current assets and current liabilities
Accounts receivable	(50)		(78)
Accounts payable	22		31
Accounts payable to affiliates			1
Unbilled revenues	36
Fuel, materials and supplies	53		47
Taxes payable	(14)		(2)
Accrued interest	36		30
Other	(24)		(29)
Other operating activities
Defined benefit plans - funding	(38)		(154)
Other assets			2
Other liabilities			(11)
Net cash provided by (used in) operating activities	309		85
Cash Flows from Investing Activities
Expenditures for property, plant and equipment	(272)		(271)
Net (increase) decrease in notes receivable from affiliates	66
Net (increase) decrease in restricted cash and cash equivalents	1		4
Net cash provided by (used in) investing activities	(205)		(267)
Cash Flows from Financing Activities
Contributions from member	40		75
Distributions to member	(104)		(4)
Net increase (decrease) in notes payable to affiliates			60
Net increase (decrease) in short-term debt	(45)		60
Net cash provided by (used in) financing activities	(109)		191
Net Increase (Decrease) in Cash and Cash Equivalents	(5)		9
Cash and Cash Equivalents at Beginning of Period	35		43
Cash and Cash Equivalents at End of Period	30		52
Louisville Gas And Electric Co [Member]
Cash Flows from Operating Activities
Net income (loss)	52	[2]	44	[2]
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Depreciation	38		36
Amortization	3		3
Defined benefit plans - expense	2		6
Deferred income taxes and investment tax credits	6		11
Other	(5)		(5)
Change in current assets and current liabilities
Accounts receivable	(40)		(37)
Accounts payable	14		9
Accounts payable to affiliates	(7)		(7)
Unbilled revenues	22		1
Fuel, materials and supplies	44		37
Taxes payable	21		17
Other	5		11
Other operating activities
Defined benefit plans - funding	(9)		(43)
Other liabilities	2		2
Net cash provided by (used in) operating activities	148		85
Cash Flows from Investing Activities
Expenditures for property, plant and equipment	(116)		(98)
Net (increase) decrease in restricted cash and cash equivalents	1		4
Net cash provided by (used in) investing activities	(115)		(94)
Cash Flows from Financing Activities
Contributions from parent			25
Payment of common stock dividends to parent	(27)		(19)
Net increase (decrease) in short-term debt	(5)		15
Net cash provided by (used in) financing activities	(32)		21
Net Increase (Decrease) in Cash and Cash Equivalents	1		12
Cash and Cash Equivalents at Beginning of Period	8		22
Cash and Cash Equivalents at End of Period	9		34
Kentucky Utilities Co [Member]
Cash Flows from Operating Activities
Net income (loss)	77	[1]	64	[1]
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Depreciation	48		46
Amortization	3		4
Defined benefit plans - expense	2		5
Deferred income taxes and investment tax credits	34		35
Other	2		9
Change in current assets and current liabilities
Accounts receivable	(24)		(31)
Accounts payable	15		32
Accounts payable to affiliates	16		8
Unbilled revenues	14		(1)
Fuel, materials and supplies	9		10
Taxes payable	(12)		(17)
Accrued interest	18		15
Other	(9)		(20)
Other operating activities
Defined benefit plans - funding	(3)		(60)
Other assets			1
Other liabilities	1		(15)
Net cash provided by (used in) operating activities	191		85
Cash Flows from Investing Activities
Expenditures for property, plant and equipment	(154)		(172)
Net cash provided by (used in) investing activities	(154)		(172)
Cash Flows from Financing Activities
Contributions from parent	40		50
Payment of common stock dividends to parent	(37)		(13)
Net increase (decrease) in short-term debt	(40)		45
Net cash provided by (used in) financing activities	(37)		82
Net Increase (Decrease) in Cash and Cash Equivalents			(5)
Cash and Cash Equivalents at Beginning of Period	21		21
Cash and Cash Equivalents at End of Period	$ 21		$ 16

[1] Net income approximates comprehensive income.

[2] Net income equals comprehensive income.