CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash Flows from Operating Activities
Net income		$ (1,480)	$ 1,469	$ 1,746
Loss (income) from discontinued operations (net of income taxes)		1,498	(829)	(1,010)
Income (Loss) from Continuing Operations After Income Taxes		18	640	736
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation		1,082	1,022	949
Amortization		39	58	58
Deferred income taxes and investment tax credits		87	169	169
Impairment of solar panels		37	0	0
Loss on Extinguishment of Debt		395	0	0
Other		20	67	69
Change in current assets and current liabilities
Accounts receivable		(14)	(70)	(3)
Accounts payable		24	(1)	(66)
Taxes payable		27	131	9
Regulatory assets and liabilities, net		52	(63)	(88)
Other		(67)	118	(29)
Other operating activities
Defined benefit plans - funding		(53)	(119)	(73)
Other assets		(111)	(59)	(100)
Other liabilities		8	(21)	(24)
Net cash provided by operating activities - continuing operations		1,544	1,872	1,607
Net cash provided by operating activities - discontinued operations		726	874	820
Net cash provided by operating activities		2,270	2,746	2,427
Cash Flows from Investing Activities
Expenditures for property, plant and equipment		(1,973)	(2,270)	(2,243)
Proceeds from sale of discontinued operations, net of cash divested		10,560	0	0
Other investing activities		(23)	4	10
Net cash provided by (used in) investing activities - continuing operations		8,564	(2,266)	(2,233)
Net cash provided by (used in) investing activities - discontinued operations		(607)	(992)	(847)
Net cash provided by (used in) investing activities		7,957	(3,258)	(3,080)
Cash Flows from Financing Activities
Issuance of long-term debt		650	1,848	1,099
Retirement of long-term debt		(4,606)	(975)	(300)
Issuance of common stock		9	34	1,167
Proceeds from project financing		19	173	0
Payment of common stock dividends		(1,279)	(1,275)	(1,192)
Purchase of treasury stock		(1,003)	0	0
Issuance of term loan		0	300	0
Issuance of commercial paper		0	73	0
Retirement of term loan		(300)	0	0
Retirement of commercial paper		(73)	0	0
Net increase (decrease) in short-term debt		(726)	(43)	(341)
Other financing activities		(35)	(36)	(25)
Net cash provided by (used in) financing activities - continuing operations		(7,344)	99	408
Net cash provided by (used in) financing activities - discontinued operations		(411)	209	171
Contributions from discontinued operations		365	78	257
Net cash provided by (used in) financing activities		(7,390)	386	836
Effect of Exchange Rates on Cash, Cash Equivalents and Restricted Cash included in Discontinued Operations		8	17	10
Net (Increase) Decrease in Cash, Cash Equivalents and Restricted Cash included in Discontinued Operations		284	(108)	(154)
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash		3,129	(217)	39
Cash, Cash Equivalents and Restricted Cash at Beginning of Period		443	660	621
Cash, Cash Equivalents and Restricted Cash at End of Period		3,572	443	660
Supplemental Disclosures of Cash Flow Information:
Interest - net of amount capitalized		191	586	552
Income taxes - net		284	4	(12)
Accrued expenditures for property, plant and equipment at December 31,		245	257	292
PPL Electric Utilities Corp [Member]
Cash Flows from Operating Activities
Net income	[1]	445	497	457
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation		424	403	386
Amortization		19	26	24
Defined benefit plans - expense (income)		(10)	(1)	0
Deferred income taxes and investment tax credits		79	83	90
Other		(19)	(5)	(19)
Change in current assets and current liabilities
Accounts receivable		(9)	(47)	33
Accounts payable		(3)	21	5
Unbilled Revenues		(8)	13	(14)
Fuel, materials and supplies		(5)	(18)	(8)
Prepayments		(4)	(3)	(1)
Taxes payable		14	4	1
Regulatory assets and liabilities, net		96	(40)	(43)
Other		(1)	(10)	(3)
Other operating activities
Defined benefit plans - funding		(21)	(21)	(21)
Other assets		(12)	(28)	15
Other liabilities		(16)	10	11
Net cash provided by operating activities		969	884	913
Cash Flows from Investing Activities
Expenditures for property, plant and equipment		(898)	(1,145)	(1,114)
Expenditures for intangible assets		(6)	(9)	(7)
Net decrease in notes receivable from affiliates		(499)	0	0
Other investing activities		3	3	4
Net cash provided by (used in) investing activities		(1,400)	(1,151)	(1,117)
Cash Flows from Financing Activities
Issuance of long-term debt		650	250	393
Retirement of long-term debt		(400)	0	(100)
Contributions from parent		1,075	940	400
Payment of common stock dividends to parent		(334)	(400)	(486)
Return of Capital to Parent		(574)	(745)	0
Other financing activities		(5)	(2)	(8)
Net cash provided by (used in) financing activities		412	43	199
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash		(19)	(224)	(5)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period		40	264	269
Cash, Cash Equivalents and Restricted Cash at End of Period		21	40	264
Supplemental Disclosures of Cash Flow Information:
Interest - net of amount capitalized		156	158	154
Income taxes - net		64	67	32
Accrued expenditures for property, plant and equipment at December 31,		118	156	180
Louisville Gas And Electric Co [Member]
Cash Flows from Operating Activities
Net income	[2]	249	244	232
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation		279	259	231
Amortization		2	9	15
Defined benefit plans - expense (income)		1	3	3
Deferred income taxes and investment tax credits		8	3	56
Change in current assets and current liabilities
Accounts receivable		(11)	(3)	(9)
Accounts receivable from affiliates		(13)	4	6
Accounts payable		32	(18)	(10)
Unbilled Revenues		(1)	(3)	1
Accounts payable to affiliates		(4)	(5)	5
Fuel, materials and supplies		(17)	4	5
Taxes payable		2	(1)	7
Regulatory assets and liabilities, net		(23)	0	(19)
Other		(18)	(3)	(5)
Other operating activities
Defined benefit plans - funding		(3)	(11)	(6)
Other assets		2	(2)	(1)
Expenditures for asset retirement obligations		(27)	(20)	(30)
Other liabilities		0	23	11
Net cash provided by operating activities		458	483	492
Cash Flows from Investing Activities
Expenditures for property, plant and equipment		(466)	(456)	(482)
Net cash provided by (used in) investing activities		(466)	(456)	(482)
Increase (Decrease) in Due to Related Parties		324	0	0
Cash Flows from Financing Activities
Issuance of long-term debt		0	0	399
Retirement of long-term debt		0	0	(200)
Acquisition of outstanding bonds		0	0	(40)
Remarketing of reacquired bonds		0	0	40
Issuance of commercial paper		0	41	0
Retirement of commercial paper		(41)	0	0
Contributions from parent		74	103	25
Payment of common stock dividends to parent		(192)	(161)	(182)
Other financing activities		(3)	(1)	(6)
Net cash provided by (used in) financing activities		10	(35)	(5)
Net Increase (Decrease) in Cash and Cash Equivalents		2	(8)	5
Supplemental Disclosures of Cash Flow Information:
Interest - net of amount capitalized		77	82	77
Income taxes - net		52	63	2
Accrued expenditures for property, plant and equipment at December 31,		60	60	59
Net increase (decrease) in short-term debt		(152)	(17)	(41)
Kentucky Utilities Co [Member]
Cash Flows from Operating Activities
Net income	[3]	296	280	293
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation		366	346	315
Amortization		12	8	10
Defined benefit plans - expense (income)		(3)	0	(1)
Deferred income taxes and investment tax credits		1	20	39
Other		(3)	(1)	(3)
Change in current assets and current liabilities
Accounts receivable		6	(13)	(3)
Accounts receivable from affiliates		1	(1)	0
Accounts payable		(12)	9	(15)
Unbilled Revenues		6	(9)	4
Accounts payable to affiliates		15	(16)	(2)
Fuel, materials and supplies		1	6	(6)
Taxes payable		(10)	2	2
Regulatory assets and liabilities, net		(22)	(26)	(26)
Other		(18)	(5)	(6)
Other operating activities
Defined benefit plans - funding		(1)	(3)	(3)
Other assets		9	(2)	(2)
Expenditures for asset retirement obligations		(36)	(64)	(59)
Other liabilities		0	12	16
Net cash provided by operating activities		608	543	553
Cash Flows from Investing Activities
Expenditures for property, plant and equipment		(560)	(510)	(610)
Other investing activities		4	3	0
Net cash provided by (used in) investing activities		(556)	(507)	(610)
Increase (Decrease) in Due to Related Parties		294	0	0
Cash Flows from Financing Activities
Issuance of long-term debt		0	498	306
Retirement of long-term debt		0	(500)	0
Issuance of commercial paper		0	32	0
Retirement of commercial paper		(32)	0	0
Contributions from parent		100	128	68
Payment of common stock dividends to parent		(250)	(200)	(229)
Other financing activities		(2)	(5)	(5)
Net cash provided by (used in) financing activities		(61)	(26)	55
Net Increase (Decrease) in Cash and Cash Equivalents		(9)	10	(2)
Supplemental Disclosures of Cash Flow Information:
Interest - net of amount capitalized		105	109	101
Income taxes - net		72	44	39
Accrued expenditures for property, plant and equipment at December 31,		67	40	54
Net increase (decrease) in short-term debt		$ (171)	$ 21	$ (85)

[1] Net income equals comprehensive income.

[2] Net income equals comprehensive income.

[3] Net income equals comprehensive income.