CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020
Cash Flows from Operating Activities
Net income (loss)		$ (1,614)	$ 1,179
Income (loss) from discontinued operations (net of income taxes) available to PPL common shareowners - Basic and Diluted		1,490	(705)
Income from continuing operations (net of income taxes)		(124)	474
Depreciation		810	762
Amortization		30	40
Deferred income taxes and investment tax credits		51	164
Impairment of solar panels		37	0
Loss on extinguishment of debt		395	0
Other		7	33
Change in current assets and current liabilities
Accounts payable		(32)	(33)
Unbilled revenues		67	93
Prepayments		(33)	(43)
Regulatory assets and liabilities, net		50	(44)
Taxes payable		75	94
Other		46	147
Other operating activities
Defined benefit plans - funding		(41)	(61)
Other assets		(105)	(7)
Other liabilities		19	(40)
Net cash provided by operating activities - continuing operations		1,252	1,579
Net cash provided by operating activities - discontinued operations		726	668
Net cash provided by operating activities		1,978	2,247
Cash Flows from Investing Activities
Expenditures for property, plant and equipment		(1,460)	(1,690)
Proceeds from sale of discontinued operations, net of cash divested		10,560	0
Other investing activities		(22)	0
Net cash provided by (used in) investing activities - continuing operations		9,078	(1,690)
Net cash provided by (used in) investing activities - discontinued operations		(607)	(668)
Net cash provided by (used in) investing activities		8,471	(2,358)
Cash Flows from Financing Activities
Issuance of long-term debt		650	1,598
Retirement of long-term debt		(4,606)	(975)
Proceeds from project financing		21	152
Issuance of common stock		5	32
Payment of common stock dividends		(961)	(956)
Purchase of treasury stock		(282)	0
Issuance of term loan		0	300
Retirement of term loan		(300)	0
Retirement of commercial paper		(73)	0
Net increase (decrease) in short-term debt		(795)	(213)
Other financing activities		(29)	(21)
Net cash provided by (used in) financing activities - continuing operations		(6,370)	(83)
Net cash provided by (used in) financing activities - discontinued operations		(411)	78
Contributions (to) from discontinued operations		365	38
Net cash provided by (used in) financing activities		(6,416)	33
Effect of Exchange Rates on Cash, Cash Equivalents and Restricted Cash included in Discontinued Operations		8	(6)
Net (Increase) Decrease in Cash, Cash Equivalents and Restricted Cash included in Discontinued Operations		284	(72)
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash		4,325	(156)
Cash and Cash Equivalents at Beginning of Period		442
Cash, Cash Equivalents and Restricted Cash at Beginning of Period		443	660
Cash and Cash Equivalents at End of Period		4,767
Cash, Cash Equivalents and Restricted Cash at End of Period		4,768	504
Supplemental Disclosures of Cash Flow Information
Accrued expenditures for property, plant and equipment at September 30,		214	228
PPL Electric Utilities Corp [Member]
Cash Flows from Operating Activities
Net income (loss)	[1]	335	370
Depreciation		322	301
Amortization		14	21
Defined benefit plans - (income) expense		(7)	(1)
Deferred income taxes and investment tax credits		75	68
Other		(15)	0
Change in current assets and current liabilities
Accounts receivable		(24)	(35)
Accounts payable		(39)	(7)
Unbilled revenues		37	54
Fuel, materials and supplies		3	(23)
Prepayments		(32)	(30)
Regulatory assets and liabilities, net		81	(31)
Other		5	1
Other operating activities
Defined benefit plans - funding		(21)	(21)
Other assets		(18)	(20)
Other liabilities		(12)	9
Net cash provided by operating activities		704	656
Cash Flows from Investing Activities
Expenditures for property, plant and equipment		(680)	(840)
Net (increase) decrease in notes receivable from affiliate		(575)	0
Other investing activities		(1)	(4)
Net cash provided by (used in) investing activities		(1,256)	(844)
Cash Flows from Financing Activities
Issuance of long-term debt		650	0
Retirement of long-term debt		(400)	0
Payment of common stock dividends to parent		(251)	(323)
Net increase (decrease) in short-term debt		0	280
Contributions from parent		1,075	740
Return of capital to parent		(500)	(745)
Other financing activities		(3)	0
Net cash provided by (used in) financing activities		571	(48)
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash		19	(236)
Cash and Cash Equivalents at Beginning of Period		40
Cash, Cash Equivalents and Restricted Cash at Beginning of Period		40	264
Cash and Cash Equivalents at End of Period		59
Cash, Cash Equivalents and Restricted Cash at End of Period		59	28
Supplemental Disclosures of Cash Flow Information
Accrued expenditures for property, plant and equipment at September 30,		131	150
Louisville Gas And Electric Co [Member]
Cash Flows from Operating Activities
Net income (loss)	[2]	202	191
Depreciation		206	193
Amortization		1	6
Defined benefit plans - (income) expense		0	2
Deferred income taxes and investment tax credits		4	1
Change in current assets and current liabilities
Accounts receivable		4	6
Accounts receivable from affiliates		(2)	7
Accounts payable		19	(23)
Increase (Decrease) in Accounts Payable, Related Parties		(13)	(8)
Unbilled revenues		19	22
Fuel, materials and supplies		(7)	9
Regulatory assets and liabilities, net		(14)	5
Taxes payable		5	(1)
Accrued interest		17	18
Other		(8)	(13)
Other operating activities
Defined benefit plans - funding		(3)	(6)
Expenditures for asset retirement obligations		(19)	(12)
Other assets		(3)	(1)
Other liabilities		4	23
Net cash provided by operating activities		412	419
Cash Flows from Investing Activities
Expenditures for property, plant and equipment		(339)	(329)
Net cash provided by (used in) investing activities		(339)	(329)
Cash Flows from Financing Activities
Increase Decrease In Notes Payable To Affiliates		284	0
Retirement of commercial paper		(41)	0
Payment of common stock dividends to parent		(139)	(115)
Net increase (decrease) in short-term debt		(221)	(32)
Contributions from parent		44	53
Other financing activities		(2)	(1)
Net cash provided by (used in) financing activities		(75)	(95)
Cash and Cash Equivalents, Period Increase (Decrease)		(2)	(5)
Cash and Cash Equivalents at Beginning of Period		7	15
Cash and Cash Equivalents at End of Period		5	10
Supplemental Disclosures of Cash Flow Information
Accrued expenditures for property, plant and equipment at September 30,		40	43
Kentucky Utilities Co [Member]
Cash Flows from Operating Activities
Net income (loss)	[3]	241	217
Depreciation		273	258
Amortization		5	6
Defined benefit plans - (income) expense		(2)	0
Deferred income taxes and investment tax credits		0	20
Other		(1)	(1)
Change in current assets and current liabilities
Accounts receivable		(6)	(22)
Accounts receivable from affiliates		1	0
Accounts payable		(4)	7
Increase (Decrease) in Accounts Payable, Related Parties		(4)	(18)
Unbilled revenues		17	15
Fuel, materials and supplies		4	12
Regulatory assets and liabilities, net		(16)	(20)
Taxes payable		9	1
Accrued interest		25	23
Other		(17)	(15)
Other operating activities
Defined benefit plans - funding		(1)	(1)
Expenditures for asset retirement obligations		(27)	(47)
Other assets		2	0
Other liabilities		5	11
Net cash provided by operating activities		504	446
Cash Flows from Investing Activities
Expenditures for property, plant and equipment		(400)	(381)
Other investing activities		4	3
Net cash provided by (used in) investing activities		(396)	(378)
Cash Flows from Financing Activities
Issuance of long-term debt		0	498
Retirement of long-term debt		0	(500)
Increase Decrease In Notes Payable To Affiliates		208	0
Retirement of commercial paper		(32)	0
Payment of common stock dividends to parent		(186)	(145)
Net increase (decrease) in short-term debt		(171)	(11)
Contributions from parent		60	98
Other financing activities		(1)	(5)
Net cash provided by (used in) financing activities		(122)	(65)
Cash and Cash Equivalents, Period Increase (Decrease)		(14)	3
Cash and Cash Equivalents at Beginning of Period		22	12
Cash and Cash Equivalents at End of Period		8	15
Supplemental Disclosures of Cash Flow Information
Accrued expenditures for property, plant and equipment at September 30,		$ 43	$ 35

[1] Net income equals comprehensive income.

[2] Net income equals comprehensive income.

[3] Net income equals comprehensive income.