CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016
Cash Flows from Operating Activities
Net Income		$ 1,050	$ 1,437
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation		745	692
Amortization		72	54
Defined benefit plans - expense (income)		(69)	(29)
Deferred income taxes and investment tax credits		284	436
Unrealized (gains) losses on derivatives, and other hedging activities		194	107
Stock-based compensation expense		30	23
Other		(8)	(12)
Change in current assets and current liabilities
Accounts receivable		25	(29)
Accounts payable		(93)	(40)
Unbilled revenues		81	32
Fuel, materials and supplies		35	8
Prepayments		(37)	(34)
Taxes payable		6	40
Regulatory assets and liabilities, net		(3)	(32)
Accrued interest		49	32
Other current liabilities		(53)	(48)
Other		5	(5)
Other operating activities
Defined benefit plans - funding		(558)	(345)
Other assets		4	18
Other liabilities		(5)	(75)
Net cash provided by operating activities		1,754	2,230
Cash Flows from Investing Activities
Expenditures for property, plant and equipment		(2,152)	(2,073)
Expenditures for intangible assets		(25)	(23)
Other investing activities		13	30
Net cash used in investing activities		(2,164)	(2,066)
Cash Flows from Financing Activities
Issuance of long-term debt		1,088	1,241
Retirement of long-term debt		(60)	(905)
Settlement of cross-currency swaps		0	46
Issuance of common stock		275	133
Payment of common stock dividends		(800)	(772)
Net increase (decrease) in short-term debt		269	(268)
Other financing activities		(34)	(33)
Net cash provided by (used in) financing activities		738	(558)
Effect of Exchange Rates on Cash and Cash Equivalents		7	(26)
Net Increase (Decrease) in Cash and Cash Equivalents		335	(420)
Cash and Cash Equivalents at Beginning of Period		341	836
Cash and Cash Equivalents at End of Period		676	416
Supplemental Disclosures of Cash Flow Information
Accrued expenditures for property, plant and equipment at September 30,		373	293
Accrued expenditures for intangible assets at September 30,		60	104
PPL Electric Utilities Corp [Member]
Cash Flows from Operating Activities
Net Income	[1]	251	263
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation		228	185
Amortization		25	19
Defined benefit plans - expense (income)		10	9
Deferred income taxes and investment tax credits		129	151
Other		(8)	(14)
Change in current assets and current liabilities
Accounts receivable		7	(6)
Accounts payable		(38)	(1)
Unbilled revenues		30	10
Prepayments		(31)	29
Taxes payable		10	(6)
Regulatory assets and liabilities, net		0	(41)
Other		(9)	(13)
Other operating activities
Defined benefit plans - funding		(24)	0
Other assets		(2)	15
Other liabilities		(3)	(5)
Net cash provided by operating activities		575	595
Cash Flows from Investing Activities
Expenditures for property, plant and equipment		(851)	(739)
Expenditures for intangible assets		(7)	(3)
Net increase in notes receivable from affiliate		(2)	0
Other investing activities		2	2
Net cash used in investing activities		(858)	(740)
Cash Flows from Financing Activities
Issuance of long-term debt		470	224
Retirement of long-term debt		0	(224)
Contributions from parent		575	200
Payment of common stock dividends to parent		(231)	(193)
Net increase (decrease) in short-term debt		(295)	130
Other financing activities		(6)	(3)
Net cash provided by (used in) financing activities		513	134
Net Increase (Decrease) in Cash and Cash Equivalents		230	(11)
Cash and Cash Equivalents at Beginning of Period		13	47
Cash and Cash Equivalents at End of Period		243	36
Supplemental Disclosures of Cash Flow Information
Accrued expenditures for property, plant and equipment at September 30,		190	166
LG And E And KU Energy LLC [Member]
Cash Flows from Operating Activities
Net Income		322	337
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation		324	301
Amortization		19	21
Defined benefit plans - expense (income)		19	20
Deferred income taxes and investment tax credits		173	212
Other		1	0
Change in current assets and current liabilities
Accounts receivable		18	(43)
Accounts payable		(30)	7
Accounts payable to affiliates		3	4
Unbilled revenues		19	6
Fuel, materials and supplies		34	7
Taxes payable		13	0
Accrued interest		41	42
Other		(1)	(4)
Other operating activities
Defined benefit plans - funding		(32)	(82)
Expenditures for asset retirement obligations		(22)	(15)
Other assets		5	1
Other liabilities		14	2
Net cash provided by operating activities		920	816
Cash Flows from Investing Activities
Expenditures for property, plant and equipment		(579)	(600)
Other investing activities		4	1
Net cash used in investing activities		(575)	(599)
Cash Flows from Financing Activities
Net increase (decrease) in notes payable with affiliate		(4)	84
Issuance of long-term debt		60	221
Retirement of long-term debt		(60)	(221)
Debt issuance and credit facility costs		(3)	(3)
Net increase (decrease) in short-term debt		5	(130)
Distributions to member		(316)	(224)
Contributions from member		0	37
Net cash provided by (used in) financing activities		(318)	(236)
Net Increase (Decrease) in Cash and Cash Equivalents		27	(19)
Cash and Cash Equivalents at Beginning of Period		13	30
Cash and Cash Equivalents at End of Period		40	11
Supplemental Disclosures of Cash Flow Information
Accrued expenditures for property, plant and equipment at September 30,		142	86
Louisville Gas And Electric Co [Member]
Cash Flows from Operating Activities
Net Income	[1]	161	159
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation		136	126
Amortization		11	10
Defined benefit plans - expense (income)		5	6
Deferred income taxes and investment tax credits		96	117
Change in current assets and current liabilities
Accounts receivable		12	(17)
Accounts receivable from affiliates		6	(11)
Accounts payable		(12)	24
Accounts payable to affiliates		(10)	(6)
Unbilled revenues		11	10
Fuel, materials and supplies		6	11
Taxes payable		(15)	0
Accrued interest		12	13
Other		6	1
Other operating activities
Defined benefit plans - funding		(3)	(45)
Expenditures for asset retirement obligations		(13)	(11)
Other assets		5	(3)
Other liabilities		4	(1)
Net cash provided by operating activities		418	383
Cash Flows from Investing Activities
Expenditures for property, plant and equipment		(293)	(343)
Net cash used in investing activities		(293)	(343)
Cash Flows from Financing Activities
Net increase (decrease) in notes payable with affiliate		10	0
Issuance of long-term debt		60	125
Retirement of long-term debt		(60)	(125)
Contributions from parent		0	47
Debt issuance and credit facility costs		(2)	(1)
Payment of common stock dividends to parent		(150)	(87)
Net increase (decrease) in short-term debt		21	(14)
Net cash provided by (used in) financing activities		(121)	(55)
Net Increase (Decrease) in Cash and Cash Equivalents		4	(15)
Cash and Cash Equivalents at Beginning of Period		5	19
Cash and Cash Equivalents at End of Period		9	4
Supplemental Disclosures of Cash Flow Information
Accrued expenditures for property, plant and equipment at September 30,		83	46
Kentucky Utilities Co [Member]
Cash Flows from Operating Activities
Net Income	[2]	196	207
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation		188	175
Amortization		7	10
Defined benefit plans - expense (income)		3	4
Deferred income taxes and investment tax credits		116	122
Other		0	(1)
Change in current assets and current liabilities
Accounts receivable		6	(24)
Accounts receivable from affiliates		(1)	0
Accounts payable		(6)	(11)
Accounts payable to affiliates		(16)	2
Unbilled revenues		8	(4)
Fuel, materials and supplies		28	(4)
Taxes payable		(21)	0
Accrued interest		22	22
Other		(6)	2
Other operating activities
Defined benefit plans - funding		(22)	(19)
Expenditures for asset retirement obligations		(9)	(4)
Other assets		0	(4)
Other liabilities		8	(4)
Net cash provided by operating activities		501	469
Cash Flows from Investing Activities
Expenditures for property, plant and equipment		(283)	(255)
Net increase in notes receivable from affiliate		(10)	0
Other investing activities		4	1
Net cash used in investing activities		(289)	(254)
Cash Flows from Financing Activities
Issuance of long-term debt		0	96
Retirement of long-term debt		0	(96)
Contributions from parent		0	20
Debt issuance and credit facility costs		(1)	(1)
Payment of common stock dividends to parent		(171)	(197)
Net increase (decrease) in short-term debt		(16)	(41)
Net cash provided by (used in) financing activities		(188)	(219)
Net Increase (Decrease) in Cash and Cash Equivalents		24	(4)
Cash and Cash Equivalents at Beginning of Period		7	11
Cash and Cash Equivalents at End of Period		31	7
Supplemental Disclosures of Cash Flow Information
Accrued expenditures for property, plant and equipment at September 30,		$ 58	$ 40

[1] Net income equals comprehensive income.

[2] Net income approximates comprehensive income.