CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018
Cash Flows from Operating Activities
Net Income		$ 1,382	$ 1,412
Depreciation		890	817
Amortization		60	56
Defined benefit plans - (income) expense		(198)	(146)
Deferred income taxes and investment tax credits		257	255
Unrealized gains on derivatives, and other hedging activities		(18)	(129)
Stock-based compensation expense		24	21
Other		(15)	(12)
Change in current assets and current liabilities
Accounts receivable		57	38
Accounts payable		(116)	(55)
Unbilled revenues		58	129
Fuel, materials and supplies		9	25
Prepayments		(53)	(38)
Regulatory assets and liabilities, net		(62)	39
Accrued interest		74	48
Other current liabilities		(94)	(36)
Other		(6)	(1)
Other operating activities
Defined benefit plans - funding		(281)	(284)
Proceeds from transfer of excess benefit plan funds		0	65
Other assets		(24)	(38)
Other liabilities		(56)	44
Net cash provided by operating activities		1,888	2,210
Cash Flows from Investing Activities
Expenditures for property, plant and equipment		(2,197)	(2,344)
Purchase of investments		(55)	(65)
Proceeds from the sale of investments		63	3
Other investing activities		(5)	(60)
Net cash used in investing activities		(2,194)	(2,466)
Cash Flows from Financing Activities
Issuance of long-term debt		1,465	602
Retirement of Long-term Debt		(200)	(277)
Issuance of common stock		49	678
Payment of common stock dividends		(893)	(846)
Net increase (decrease) in short-term debt		(34)	481
Other financing activities		(24)	(20)
Net cash provided by (used in) financing activities		363	618
Effect of Exchange Rates on Cash, Cash Equivalents and Restricted Cash		(10)	(9)
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash		47	353
Cash and Cash Equivalents at Beginning of Period		621
Cash and Cash Equivalents at End of Period		670
Cash, Cash Equivalents and Restricted Cash at Beginning of Period		643	511
Cash, Cash Equivalents and Restricted Cash at End of Period		690	864
Supplemental Disclosures of Cash Flow Information
Accrued expenditures for property, plant and equipment at September 30,		363	311
Accrued expenditures for intangible assets at September 30,		67	70
PPL Electric Utilities Corp [Member]
Cash Flows from Operating Activities
Net Income	[1]	333	334
Depreciation		290	262
Amortization		18	17
Defined benefit plans - (income) expense		0	2
Deferred income taxes and investment tax credits		70	77
Other		(14)	(13)
Change in current assets and current liabilities
Accounts receivable		34	22
Accounts payable		(46)	(46)
Unbilled revenues		28	45
Prepayments		(36)	(25)
Regulatory assets and liabilities, net		(42)	(25)
Taxes payable		(4)	(1)
Other		(20)	12
Other operating activities
Defined benefit plans - funding		(21)	(28)
Other assets		11	(37)
Other liabilities		8	54
Net cash provided by operating activities		609	650
Cash Flows from Investing Activities
Expenditures for property, plant and equipment		(815)	(835)
Expenditures for intangible assets		(4)	0
Net increase in notes receivable from affiliate		(546)	0
Other investing activities		4	(2)
Net cash used in investing activities		(1,361)	(837)
Cash Flows from Financing Activities
Issuance of long-term debt		393	398
Payment of common stock dividends to parent		(276)	(271)
Contributions from parent		400	429
Other financing activities		(5)	(4)
Net cash provided by (used in) financing activities		512	552
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash		(240)	365
Cash and Cash Equivalents at Beginning of Period		267
Cash and Cash Equivalents at End of Period		27
Cash, Cash Equivalents and Restricted Cash at Beginning of Period		269	51
Cash, Cash Equivalents and Restricted Cash at End of Period		29	416
Supplemental Disclosures of Cash Flow Information
Accrued expenditures for property, plant and equipment at September 30,		168	171
LG And E And KU Energy LLC [Member]
Cash Flows from Operating Activities
Net Income	[2]	388	358
Depreciation		402	354
Amortization		20	13
Defined benefit plans - (income) expense		9	12
Deferred income taxes and investment tax credits		78	71
Other		(2)	(2)
Change in current assets and current liabilities
Accounts receivable		13	8
Accounts payable		(34)	4
Accounts payable to affiliates		6	7
Unbilled revenues		5	54
Fuel, materials and supplies		16	17
Regulatory assets and liabilities, net		(19)	62
Taxes payable		(7)	(11)
Accrued interest		57	41
Other		(31)	(36)
Other operating activities
Defined benefit plans - funding		(34)	(126)
Expenditures for asset retirement obligations		(67)	(46)
Other assets		(4)	(1)
Other liabilities		17	8
Net cash provided by operating activities		813	787
Cash Flows from Investing Activities
Expenditures for property, plant and equipment		(761)	(826)
Other investing activities		0	1
Net cash used in investing activities		(761)	(825)
Cash Flows from Financing Activities
Net increase (decrease) in notes payable with affiliate		16	(145)
Proceeds from Related Party Debt		0	250
Issuance of long-term debt		705	118
Retirement of Long-term Debt		(200)	(27)
Acquisition of outstanding bonds		(40)	0
Remarketing of reacquired bonds		40	0
Distributions to member		(206)	(217)
Proceeds from Contributions from Affiliates		63	0
Net increase (decrease) in short-term debt		(413)	60
Other financing activities		(11)	(2)
Net cash provided by (used in) financing activities		(46)	37
Cash and Cash Equivalents, Period Increase (Decrease)		6	(1)
Cash and Cash Equivalents at Beginning of Period		24	30
Cash and Cash Equivalents at End of Period		30	29
Supplemental Disclosures of Cash Flow Information
Accrued expenditures for property, plant and equipment at September 30,		107	108
Louisville Gas And Electric Co [Member]
Cash Flows from Operating Activities
Net Income	[3]	188	188
Depreciation		168	146
Amortization		13	10
Deferred income taxes and investment tax credits		45	46
Other		2	2
Change in current assets and current liabilities
Accounts receivable		13	14
Accounts receivable from affiliates		9	2
Accounts payable		(10)	14
Accounts payable to affiliates		(5)	(2)
Unbilled revenues		4	30
Fuel, materials and supplies		7	9
Regulatory assets and liabilities, net		(5)	24
Accrued interest		22	13
Other		(15)	(10)
Other operating activities
Defined benefit plans - funding		(6)	(59)
Expenditures for asset retirement obligations		(22)	(17)
Other assets		(1)	0
Other liabilities		10	0
Net cash provided by operating activities		417	410
Cash Flows from Investing Activities
Expenditures for property, plant and equipment		(323)	(420)
Net cash used in investing activities		(323)	(420)
Cash Flows from Financing Activities
Issuance of long-term debt		399	100
Retirement of Long-term Debt		(200)	0
Acquisition of outstanding bonds		(40)	0
Remarketing of reacquired bonds		40	0
Payment of common stock dividends to parent		(130)	(113)
Net increase (decrease) in short-term debt		(180)	(23)
Contributions from parent		25	43
Other financing activities		(6)	(1)
Net cash provided by (used in) financing activities		(92)	6
Cash and Cash Equivalents, Period Increase (Decrease)		2	(4)
Cash and Cash Equivalents at Beginning of Period		10	15
Cash and Cash Equivalents at End of Period		12	11
Supplemental Disclosures of Cash Flow Information
Accrued expenditures for property, plant and equipment at September 30,		53	51
Kentucky Utilities Co [Member]
Cash Flows from Operating Activities
Net Income	[4]	237	225
Depreciation		233	208
Amortization		7	2
Deferred income taxes and investment tax credits		44	37
Other		(3)	(2)
Change in current assets and current liabilities
Accounts payable		(16)	(2)
Accounts payable to affiliates		(14)	(8)
Unbilled revenues		1	24
Fuel, materials and supplies		9	8
Regulatory assets and liabilities, net		(14)	38
Taxes payable		5	11
Accrued interest		28	21
Other		(6)	(2)
Other operating activities
Defined benefit plans - funding		(3)	(53)
Expenditures for asset retirement obligations		(45)	(29)
Other assets		(2)	(1)
Other liabilities		10	8
Net cash provided by operating activities		471	485
Cash Flows from Investing Activities
Expenditures for property, plant and equipment		(436)	(405)
Other investing activities		0	1
Net cash used in investing activities		(436)	(404)
Cash Flows from Financing Activities
Issuance of long-term debt		306	18
Retirement of Long-term Debt		0	(27)
Payment of common stock dividends to parent		(167)	(196)
Net increase (decrease) in short-term debt		(233)	83
Contributions from parent		68	45
Other financing activities		(5)	(1)
Net cash provided by (used in) financing activities		(31)	(78)
Cash and Cash Equivalents, Period Increase (Decrease)		4	3
Cash and Cash Equivalents at Beginning of Period		14	15
Cash and Cash Equivalents at End of Period		18	18
Supplemental Disclosures of Cash Flow Information
Accrued expenditures for property, plant and equipment at September 30,		$ 54	$ 57

[1] Net income equals comprehensive income.

[2] Net income approximates comprehensive income.

[3] Net income equals comprehensive income.

[4] Net income equals comprehensive income.