CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Cash Flows from Operating Activities
Net Income		$ 403	$ 481
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation		242	229
Amortization		23	18
Defined benefit plans - expense (income)		(19)	(13)
Deferred income taxes and investment tax credits		161	162
Unrealized (gains) losses on derivatives, and other hedging activities		35	(34)
Stock-based compensation expense		19	13
Other		(1)	(5)
Change in current assets and current liabilities
Accounts receivable		(43)	(62)
Accounts payable		(84)	(43)
Unbilled revenues		52	18
Fuel, materials and supplies		44	25
Prepayments		(110)	(86)
Taxes payable		(21)	15
Other current liabilities		(60)	(66)
Other		5	18
Other operating activities
Defined benefit plans - funding		(520)	(123)
Other assets		5	(5)
Other liabilities		4	15
Net cash provided by operating activities		135	557
Cash Flows from Investing Activities
Expenditures for property, plant and equipment		(677)	(656)
Expenditures for intangible assets		(3)	(6)
Net (increase) decrease in restricted cash and cash equivalents		2	0
Other investing activities		1	1
Net cash used in investing activities		(677)	(661)
Cash Flows from Financing Activities
Issuance of long-term debt		64	224
Retirement of long-term debt		0	(224)
Issuance of common stock		73	42
Payment of common stock dividends		(258)	(255)
Net increase (decrease) in short-term debt		744	351
Other financing activities		(16)	(23)
Net cash provided by (used in) financing activities		607	115
Net Increase (Decrease) in Cash and Cash Equivalents		68	(22)
Effect of Exchange Rates on Cash and Cash Equivalents		3	(33)
Cash and Cash Equivalents at Beginning of Period		341	836
Cash and Cash Equivalents at End of Period		409	814
Supplemental Disclosures of Cash Flow Information
Accrued expenditures for property, plant and equipment at March 31,		236	279
Accrued expenditures for intangible assets at March 31,		62	64
PPL Electric Utilities Corp [Member]
Cash Flows from Operating Activities
Net Income	[1]	79	94
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation		75	59
Amortization		8	7
Defined benefit plans - expense (income)		5	2
Deferred income taxes and investment tax credits		41	65
Other		0	(5)
Change in current assets and current liabilities
Accounts receivable		(27)	(43)
Accounts payable		(18)	(2)
Unbilled revenues		12	5
Prepayments		(75)	(21)
Regulatory assets and liabilities		(11)	(21)
Taxes payable		0	(8)
Other		(14)	(12)
Other operating activities
Defined benefit plans - funding		(24)	0
Other assets		5	3
Other liabilities		(1)	1
Net cash provided by operating activities		55	124
Cash Flows from Investing Activities
Expenditures for property, plant and equipment		(274)	(214)
Expenditures for intangible assets		(2)	(1)
Net cash used in investing activities		(276)	(215)
Cash Flows from Financing Activities
Issuance of long-term debt		0	224
Retirement of long-term debt		0	(224)
Contributions from parent		100	0
Payment of common stock dividends to parent		(76)	(45)
Net increase (decrease) in short-term debt		204	125
Other financing activities		0	(2)
Net cash provided by (used in) financing activities		228	78
Net Increase (Decrease) in Cash and Cash Equivalents		7	(13)
Cash and Cash Equivalents at Beginning of Period		13	47
Cash and Cash Equivalents at End of Period		20	34
Supplemental Disclosures of Cash Flow Information
Accrued expenditures for property, plant and equipment at March 31,		122	115
LG And E And KU Energy LLC [Member]
Cash Flows from Operating Activities
Net Income	[2]	103	120
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation		105	99
Amortization		7	7
Defined benefit plans - expense (income)		8	7
Deferred income taxes and investment tax credits		48	68
Change in current assets and current liabilities
Accounts receivable		21	(15)
Accounts payable		(28)	25
Accounts payable to affiliates		7	5
Unbilled revenues		22	8
Fuel, materials and supplies		41	21
Taxes payable		(2)	(25)
Accrued interest		42	42
Other		(38)	(24)
Other operating activities
Defined benefit plans - funding		(22)	(33)
Expenditures for asset retirement obligations		(6)	(2)
Other assets		1	0
Other liabilities		3	0
Net cash provided by operating activities		312	303
Cash Flows from Investing Activities
Expenditures for property, plant and equipment		(184)	(219)
Net cash used in investing activities		(184)	(219)
Cash Flows from Financing Activities
Net increase (decrease) in notes payable with affiliate		(81)	93
Debt issuance and credit facility costs		(1)	(1)
Net increase (decrease) in short-term debt		58	(149)
Distributions to member		(102)	(29)
Net cash provided by (used in) financing activities		(126)	(86)
Net Increase (Decrease) in Cash and Cash Equivalents		2	(2)
Cash and Cash Equivalents at Beginning of Period		13	30
Cash and Cash Equivalents at End of Period		15	28
Supplemental Disclosures of Cash Flow Information
Accrued expenditures for property, plant and equipment at March 31,		75	117
Louisville Gas And Electric Co [Member]
Cash Flows from Operating Activities
Net Income	[1]	54	56
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation		44	41
Amortization		3	3
Defined benefit plans - expense (income)		2	3
Deferred income taxes and investment tax credits		31	37
Change in current assets and current liabilities
Accounts receivable		13	(5)
Accounts receivable from affiliates		1	(4)
Accounts payable		(12)	5
Accounts payable to affiliates		(4)	0
Unbilled revenues		9	7
Fuel, materials and supplies		33	31
Taxes payable		(28)	(9)
Accrued interest		13	13
Other		(11)	(9)
Other operating activities
Defined benefit plans - funding		(1)	(13)
Expenditures for asset retirement obligations		(4)	(1)
Other assets		2	0
Other liabilities		(3)	2
Net cash provided by operating activities		142	157
Cash Flows from Investing Activities
Expenditures for property, plant and equipment		(94)	(109)
Net cash used in investing activities		(94)	(109)
Cash Flows from Financing Activities
Contributions from parent		0	30
Debt issuance and credit facility costs		0	(1)
Payment of common stock dividends to parent		(87)	(25)
Net increase (decrease) in short-term debt		38	(60)
Net cash provided by (used in) financing activities		(49)	(56)
Net Increase (Decrease) in Cash and Cash Equivalents		(1)	(8)
Cash and Cash Equivalents at Beginning of Period		5	19
Cash and Cash Equivalents at End of Period		4	11
Supplemental Disclosures of Cash Flow Information
Accrued expenditures for property, plant and equipment at March 31,		34	77
Kentucky Utilities Co [Member]
Cash Flows from Operating Activities
Net Income	[2]	63	75
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation		60	58
Amortization		4	4
Defined benefit plans - expense (income)		2	2
Deferred income taxes and investment tax credits		37	44
Change in current assets and current liabilities
Accounts receivable		8	(8)
Accounts payable		(4)	23
Accounts payable to affiliates		(7)	2
Unbilled revenues		13	1
Fuel, materials and supplies		8	(10)
Taxes payable		(34)	(8)
Accrued interest		22	22
Other		(12)	1
Other operating activities
Defined benefit plans - funding		(19)	(10)
Expenditures for asset retirement obligations		(2)	(1)
Other assets		(1)	0
Other liabilities		1	0
Net cash provided by operating activities		139	195
Cash Flows from Investing Activities
Expenditures for property, plant and equipment		(89)	(110)
Net cash used in investing activities		(89)	(110)
Cash Flows from Financing Activities
Debt issuance and credit facility costs		0	(1)
Payment of common stock dividends to parent		(70)	(64)
Net increase (decrease) in short-term debt		20	(14)
Net cash provided by (used in) financing activities		(50)	(79)
Net Increase (Decrease) in Cash and Cash Equivalents		0	6
Cash and Cash Equivalents at Beginning of Period		7	11
Cash and Cash Equivalents at End of Period		7	17
Supplemental Disclosures of Cash Flow Information
Accrued expenditures for property, plant and equipment at March 31,		$ 41	$ 40

[1] Net income equals comprehensive income.

[2] Net income approximates comprehensive income.