CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2024		Mar. 31, 2023
Cash Flows from Operating Activities
Net income (loss)		$ 307		$ 285
Depreciation		316		313
Amortization		24		17
Defined benefit plans - (income) expense		(15)		(18)
Deferred income taxes and investment tax credits		72		77
Other		3		8
Change in current assets and current liabilities
Accounts receivable		(75)		(94)
Accounts payable		(221)		(63)
Unbilled revenues		57		109
Fuel, materials and supplies		33		10
Prepayments		(108)		(83)
Taxes payable		(47)		(42)
Regulatory assets and liabilities, net		(61)		(46)
Accrued interest		90		67
Other		(103)		(14)
Other operating activities
Defined benefit plans - funding		(5)		(3)
Other assets		(1)		(61)
Other liabilities		16		(32)
Net cash provided by operating activities		282		430
Cash Flows from Investing Activities
Expenditures for property, plant and equipment		(596)		(499)
Other investing activities		5		(4)
Net cash used in investing activities		(591)		(503)
Cash Flows from Financing Activities
Issuance of long-term debt		1,148		3,127
Retirement of long-term debt		0		(1,750)
Payment of common stock dividends		(177)		(171)
Net increase (decrease) in short-term debt		(701)		(985)
Other financing activities		(22)		(44)
Net cash provided by financing activities		248		177
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash		(61)		104
Cash and Cash Equivalents at Beginning of Period		331
Cash, Cash Equivalents and Restricted Cash at Beginning of Period		382		357
Cash and Cash Equivalents at End of Period		276
Cash, Cash Equivalents and Restricted Cash at End of Period		321		461
Supplemental Disclosures of Cash Flow Information
Accrued expenditures for property, plant and equipment at March 31,		253		257
PPL Electric Utilities Corp [Member]
Cash Flows from Operating Activities
Net income (loss)	[1]	149		138
Depreciation		99		99
Amortization		12		9
Defined benefit plans - (income) expense		(11)		(10)
Deferred income taxes and investment tax credits		32		26
Other		(7)		(5)
Change in current assets and current liabilities
Accounts receivable		(33)		(115)
Accounts payable		(59)		30
Unbilled revenues		30		20
Fuel, materials and supplies		(4)		(17)
Prepayments		(110)		(77)
Taxes payable		(48)		(36)
Regulatory assets and liabilities, net		(28)		(12)
Accrued interest		35		15
Other		(26)		17
Other operating activities
Defined benefit plans - funding		(1)		(1)
Other assets		0		(22)
Other liabilities		(2)		(20)
Net cash provided by operating activities		28		39
Cash Flows from Investing Activities
Expenditures for property, plant and equipment		(229)		(155)
Expenditures for intangible assets		(1)		(1)
Notes receivable from affiliates		(554)		0
Other investing activities		4		0
Net cash used in investing activities		(780)		(156)
Cash Flows from Financing Activities
Issuance of long-term debt		649		1,329
Retirement of long-term debt		0		(1,150)
Payment of common stock dividends to parent		(88)		(74)
Net increase (decrease) in short-term debt		(509)		(145)
Contributions from parent		675		200
Debt Issuance Costs		(5)		(12)
Net cash provided by financing activities		722		148
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash		(30)		31
Cash and Cash Equivalents at Beginning of Period		51
Cash, Cash Equivalents and Restricted Cash at Beginning of Period		51		25
Cash and Cash Equivalents at End of Period		21
Cash, Cash Equivalents and Restricted Cash at End of Period		21		56
Supplemental Disclosures of Cash Flow Information
Accrued expenditures for property, plant and equipment at March 31,		146		142
Louisville Gas And Electric Co [Member]
Cash Flows from Operating Activities
Net income (loss)		93	[2]	86
Depreciation		76		75
Amortization		3		3
Defined benefit plans - (income) expense		1		0
Deferred income taxes and investment tax credits		2		0
Change in current assets and current liabilities
Accounts receivable		(19)		28
Accounts receivable from affiliates		(11)		14
Accounts payable		6		(35)
Increase (Decrease) in Accounts Payable, Related Parties		34		31
Unbilled revenues		16		33
Fuel, materials and supplies		13		41
Taxes payable		(26)		(27)
Regulatory assets and liabilities, net		(21)		21
Accrued interest		23		18
Other		(19)		(11)
Other operating activities
Defined benefit plans - funding		(1)		0
Expenditures for asset retirement obligations		(2)		(2)
Other assets		0		(10)
Other liabilities		(2)		(1)
Net cash provided by operating activities		166		264
Cash Flows from Investing Activities
Expenditures for property, plant and equipment		(92)		(86)
Notes receivable from affiliates		(28)		(9)
Net cash used in investing activities		(120)		(95)
Cash Flows from Financing Activities
Issuance of long-term debt		0		399
Retirement of long-term debt		0		(300)
Payment of common stock dividends to parent		(37)		(31)
Net increase (decrease) in short-term debt		28		(179)
Return of capital to parent		(51)		(120)
Other financing activities		0		(3)
Net cash provided by financing activities		(60)		(234)
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash		(14)		(65)
Cash and Cash Equivalents at Beginning of Period		18
Cash, Cash Equivalents and Restricted Cash at Beginning of Period		44		93
Cash and Cash Equivalents at End of Period		8
Cash, Cash Equivalents and Restricted Cash at End of Period		30		28
Supplemental Disclosures of Cash Flow Information
Accrued expenditures for property, plant and equipment at March 31,		35		46
Kentucky Utilities Co [Member]
Cash Flows from Operating Activities
Net income (loss)	[3]	108		88
Depreciation		99		98
Amortization		5		5
Defined benefit plans - (income) expense		(1)		0
Deferred income taxes and investment tax credits		(1)		(1)
Other		(1)		(1)
Change in current assets and current liabilities
Accounts receivable		(21)		16
Accounts payable		(13)		(16)
Increase (Decrease) in Accounts Payable, Related Parties		52		2
Unbilled revenues		6		25
Fuel, materials and supplies		8		(8)
Taxes payable		(17)		(11)
Regulatory assets and liabilities, net		1		8
Accrued interest		32		26
Other		(7)		2
Other operating activities
Defined benefit plans - funding		(1)		0
Expenditures for asset retirement obligations		(2)		(5)
Other assets		8		(13)
Other liabilities		(3)		(1)
Net cash provided by operating activities		252		214
Cash Flows from Investing Activities
Expenditures for property, plant and equipment		(148)		(141)
Net cash used in investing activities		(148)		(141)
Cash Flows from Financing Activities
Issuance of long-term debt		0		399
Retirement of long-term debt		0		(300)
Increase Decrease In Notes Payable To Affiliates		37		9
Payment of common stock dividends to parent		(47)		(35)
Net increase (decrease) in short-term debt		(48)		(101)
Return of capital to parent		(50)		(54)
Other financing activities		0		(3)
Net cash provided by financing activities		(108)		(85)
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash		(4)		(12)
Cash and Cash Equivalents at Beginning of Period		14
Cash, Cash Equivalents and Restricted Cash at Beginning of Period		38		21
Cash and Cash Equivalents at End of Period		12
Cash, Cash Equivalents and Restricted Cash at End of Period		34		9
Supplemental Disclosures of Cash Flow Information
Accrued expenditures for property, plant and equipment at March 31,		$ 44		$ 60

[1] Net income equals comprehensive income.

[2] Net income equals comprehensive income.

[3] Net income equals comprehensive income.