CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Millions		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018
Cash Flows from Operating Activities
Net Income		$ 907	$ 967
Depreciation		584	542
Amortization		31	34
Defined benefit plans - (income) expense		(135)	(101)
Deferred income taxes and investment tax credits		154	171
Unrealized (gains) losses on derivatives, and other hedging activities		22	(91)
Stock-based compensation expense		19	16
Other		(7)	(9)
Change in current assets and current liabilities
Accounts receivable		22	46
Accounts payable		(102)	(90)
Unbilled revenues		70	91
Fuel, materials and supplies		19	32
Prepayments		(79)	(60)
Regulatory assets and liabilities, net		(72)	42
Accrued interest		(63)	(79)
Other current liabilities		(85)	(47)
Other		11	12
Other operating activities
Defined benefit plans - funding		(207)	(206)
Proceeds from transfer of excess benefit plan funds		0	65
Other assets		11	(67)
Other liabilities		(30)	57
Net cash provided by operating activities		1,070	1,325
Cash Flows from Investing Activities
Expenditures for property, plant and equipment		(1,474)	(1,527)
Purchase of investments		(55)	(65)
Proceeds from the sale of investments		61	0
Other investing activities		(11)	(57)
Net cash used in investing activities		(1,479)	(1,649)
Cash Flows from Financing Activities
Issuance of long-term debt		769	584
Retirement of Long-term Debt		(200)	(250)
Issuance of common stock		35	147
Payment of common stock dividends		(594)	(558)
Net increase (decrease) in short-term debt		206	788
Other financing activities		(18)	(16)
Net cash provided by (used in) financing activities		198	695
Effect of Exchange Rates on Cash, Cash Equivalents and Restricted Cash		(4)	(7)
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash		(215)	364
Cash and Cash Equivalents at Beginning of Period		621
Cash and Cash Equivalents at End of Period		406
Cash, Cash Equivalents and Restricted Cash at Beginning of Period		643	511
Cash, Cash Equivalents and Restricted Cash at End of Period		428	875
Supplemental Disclosures of Cash Flow Information
Accrued expenditures for property, plant and equipment at June 30,		278	329
Accrued expenditures for intangible assets at June 30,		59	59
PPL Electric Utilities Corp [Member]
Cash Flows from Operating Activities
Net Income	[1]	215	223
Depreciation		191	173
Amortization		11	11
Deferred income taxes and investment tax credits		36	53
Other		(9)	(9)
Change in current assets and current liabilities
Accounts receivable		7	37
Accounts payable		(39)	(60)
Unbilled revenues		31	30
Prepayments		(64)	(47)
Regulatory assets and liabilities, net		(40)	(27)
Taxes payable		(4)	(1)
Other		(7)	1
Other operating activities
Defined benefit plans - funding		(21)	(28)
Other assets		4	(41)
Other liabilities		3	49
Net cash provided by operating activities		314	364
Cash Flows from Investing Activities
Expenditures for property, plant and equipment		(533)	(518)
Other investing activities		3	(3)
Net cash used in investing activities		(530)	(521)
Cash Flows from Financing Activities
Issuance of long-term debt		0	398
Payment of common stock dividends to parent		(215)	(222)
Net increase (decrease) in short-term debt		185	0
Contributions from parent		0	425
Other financing activities		(1)	(4)
Net cash provided by (used in) financing activities		(31)	597
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash		(247)	440
Cash and Cash Equivalents at Beginning of Period		267
Cash and Cash Equivalents at End of Period		20
Cash, Cash Equivalents and Restricted Cash at Beginning of Period		269	51
Cash, Cash Equivalents and Restricted Cash at End of Period		22	491
Supplemental Disclosures of Cash Flow Information
Accrued expenditures for property, plant and equipment at June 30,		158	180
LG And E And KU Energy LLC [Member]
Cash Flows from Operating Activities
Net Income	[2]	230	228
Depreciation		258	235
Amortization		16	9
Defined benefit plans - (income) expense		5	8
Deferred income taxes and investment tax credits		47	30
Other		(1)	(1)
Change in current assets and current liabilities
Accounts receivable		24	16
Accounts payable		(34)	(10)
Unbilled revenues		13	40
Fuel, materials and supplies		21	26
Regulatory assets and liabilities, net		(32)	69
Taxes payable		(25)	(25)
Accrued interest		7	0
Other		(23)	(39)
Other operating activities
Defined benefit plans - funding		(28)	(122)
Expenditures for asset retirement obligations		(45)	(26)
Other assets		(1)	(1)
Other liabilities		13	3
Net cash provided by operating activities		445	440
Cash Flows from Investing Activities
Expenditures for property, plant and equipment		(530)	(564)
Net cash used in investing activities		(530)	(564)
Cash Flows from Financing Activities
Net increase (decrease) in notes payable with affiliate		90	(126)
Proceeds from Related Party Debt		0	250
Issuance of long-term debt		705	100
Retirement of Long-term Debt		(200)	0
Distributions to member		(137)	(161)
Proceeds from Contributions from Affiliates		63	0
Net increase (decrease) in short-term debt		(418)	72
Other financing activities		(10)	(2)
Net cash provided by (used in) financing activities		93	133
Cash and Cash Equivalents, Period Increase (Decrease)		8	9
Cash and Cash Equivalents at Beginning of Period		24	30
Cash and Cash Equivalents at End of Period		32	39
Supplemental Disclosures of Cash Flow Information
Accrued expenditures for property, plant and equipment at June 30,		91	112
Louisville Gas And Electric Co [Member]
Cash Flows from Operating Activities
Net Income	[3]	108	122
Depreciation		107	97
Amortization		11	7
Defined benefit plans - (income) expense		1	2
Deferred income taxes and investment tax credits		28	18
Change in current assets and current liabilities
Accounts receivable		15	11
Accounts receivable from affiliates		6	6
Accounts payable		(16)	(12)
Accounts payable to affiliates		(4)	(3)
Unbilled revenues		9	24
Fuel, materials and supplies		27	31
Regulatory assets and liabilities, net		(13)	32
Taxes payable		(7)	(2)
Accrued interest		4	0
Other		(8)	(7)
Other operating activities
Defined benefit plans - funding		(4)	(57)
Expenditures for asset retirement obligations		(12)	(10)
Other assets		(1)	0
Other liabilities		7	(4)
Net cash provided by operating activities		258	255
Cash Flows from Investing Activities
Expenditures for property, plant and equipment		(224)	(296)
Net cash used in investing activities		(224)	(296)
Cash Flows from Financing Activities
Issuance of long-term debt		399	100
Retirement of Long-term Debt		(200)	0
Payment of common stock dividends to parent		(71)	(81)
Net increase (decrease) in short-term debt		(183)	(16)
Contributions from parent		25	43
Other financing activities		(5)	(1)
Net cash provided by (used in) financing activities		(35)	45
Cash and Cash Equivalents, Period Increase (Decrease)		(1)	4
Cash and Cash Equivalents at Beginning of Period		10	15
Cash and Cash Equivalents at End of Period		9	19
Supplemental Disclosures of Cash Flow Information
Accrued expenditures for property, plant and equipment at June 30,		40	57
Kentucky Utilities Co [Member]
Cash Flows from Operating Activities
Net Income	[4]	142	148
Depreciation		150	138
Amortization		5	2
Deferred income taxes and investment tax credits		29	9
Other		(2)	(1)
Change in current assets and current liabilities
Accounts receivable		14	4
Accounts payable		(8)	11
Accounts payable to affiliates		(15)	(12)
Unbilled revenues		4	16
Fuel, materials and supplies		(6)	(5)
Regulatory assets and liabilities, net		(19)	37
Taxes payable		(2)	4
Accrued interest		3	0
Other		1	(11)
Other operating activities
Defined benefit plans - funding		(2)	(52)
Expenditures for asset retirement obligations		(33)	(16)
Other assets		1	(1)
Other liabilities		8	3
Net cash provided by operating activities		270	274
Cash Flows from Investing Activities
Expenditures for property, plant and equipment		(305)	(266)
Net cash used in investing activities		(305)	(266)
Cash Flows from Financing Activities
Issuance of long-term debt		306	0
Payment of common stock dividends to parent		(91)	(136)
Net increase (decrease) in short-term debt		(235)	88
Contributions from parent		68	45
Other financing activities		(4)	0
Net cash provided by (used in) financing activities		44	(3)
Cash and Cash Equivalents, Period Increase (Decrease)		9	5
Cash and Cash Equivalents at Beginning of Period		14	15
Cash and Cash Equivalents at End of Period		23	20
Supplemental Disclosures of Cash Flow Information
Accrued expenditures for property, plant and equipment at June 30,		$ 52	$ 55

[1] Net income equals comprehensive income.

[2] Net income approximates comprehensive income.

[3] Net income equals comprehensive income.

[4] Net income equals comprehensive income.