CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Operating Revenues
Utility	$ 1,714	$ 1,536
Unregulated retail electric and gas	223	147
Wholesale energy marketing
Realized	1,208	1,038
Unrealized economic activity	852	57
Net energy trading margins	8	11
Energy-related businesses	107	121
Total Operating Revenues	4,112	2,910
Operation
Fuel	424	475
Energy purchases - realized	883	671
Energy purchases - unrealized economic activity	591	(18)
Other operation and maintenance	706	583
Depreciation	264	208
Taxes, other than income	91	73
Energy-related businesses	102	113
Total Operating Expenses	3,061	2,105
Operating Income	1,051	805
Other Income (Expense) - net	(17)	(5)
Other-Than-Temporary Impairments	0	1
Interest Expense	230	174
Income from Continuing Operations Before Income Taxes	804	625
Income Taxes	259	223
Income from Continuing Operations After Income Taxes	545	402
Income (Loss) from Discontinued Operations (net of income taxes)	0	3
Net Income	545	405
Net Income Attributable to Noncontrolling Interests	4	4
Net Income Attributable to Company	541	401
Amounts Attributable to Company:
Income from Continuing Operations After Income Taxes	541	398
Income (Loss) from Discontinued Operations (net of income taxes)	0	3
Net Income	541	401
Income from Continuing Operations After Income Taxes Available to PPL Corporation Common Shareowners:
Basic (in dollars per share)	$ 0.93	$ 0.82
Diluted (in dollars per share)	$ 0.93	$ 0.82
Net Income Available to PPL Corporation Common Shareowners:
Basic (in dollars per share)	$ 0.93	$ 0.82
Diluted (in dollars per share)	$ 0.93	$ 0.82
Dividends Declared Per Share of Common Stock	$ 0.360	$ 0.350
Weighted-Average Shares of Common Stock Outstanding (in thousands)
Basic	579,041	484,138
Diluted	579,527	484,345
PPL Energy Supply [Member]
Operating Revenues
Unregulated retail electric and gas	224	147
Wholesale energy marketing
Realized	1,208	1,038
Unrealized economic activity	852	57
Wholesale energy marketing to affiliates	21	6
Net energy trading margins	8	11
Energy-related businesses	96	110
Total Operating Revenues	2,409	1,369
Operation
Fuel	211	260
Energy purchases - realized	659	314
Energy purchases - unrealized economic activity	591	(18)
Energy purchases from affiliates	1	1
Other operation and maintenance	255	245
Depreciation	64	59
Taxes, other than income	18	16
Energy-related businesses	92	108
Total Operating Expenses	1,891	985
Operating Income	518	384
Other Income (Expense) - net	5	14
Other-Than-Temporary Impairments	0	1
Interest Income from Affiliates	0	3
Interest Expense	37	47
Income from Continuing Operations Before Income Taxes	486	353
Income Taxes	177	142
Income from Continuing Operations After Income Taxes	309	211
Income (Loss) from Discontinued Operations (net of income taxes)	0	3
Net Income	309	214
Net Income Attributable to Company	309	214
Amounts Attributable to Company:
Net Income	309	214
PPL Electric [Member]
Operating Revenues
Retail electric	457	554
Wholesale energy marketing
Electric revenue from affiliates	1	4
Total Operating Revenues	458	558
Operation
Energy purchases - realized	153	251
Energy purchases from affiliates	21	6
Other operation and maintenance	140	130
Depreciation	39	33
Taxes, other than income	26	35
Total Operating Expenses	379	455
Operating Income	79	103
Other Income (Expense) - net	1	0
Interest Income from Affiliates	1	0
Interest Expense	24	24
Income from Continuing Operations Before Income Taxes	57	79
Income Taxes	20	23
Net Income	37	56
Distribution on Preferred Securities	4	4
Net Income Available to PPL Corporation	33	52
LKE [Member]
Wholesale energy marketing
Total Operating Revenues	705	766
Operation
Fuel	213	215
Energy purchases - realized	74	107
Other operation and maintenance	206	181
Depreciation	86	81
Taxes, other than income	11	9
Total Operating Expenses	590	593
Operating Income	115	173
Other Income (Expense) - net	(3)	(1)
Interest Expense	38	36
Income from Continuing Operations Before Income Taxes	74	136
Income Taxes	21	49
Net Income	53	87
LGE [Member]
Operating Revenues
Retail electric	329	371
Wholesale energy marketing
Electric revenue from affiliates	24	27
Total Operating Revenues	353	398
Operation
Fuel	89	85
Energy purchases - realized	69	99
Energy purchases from affiliates	4	11
Other operation and maintenance	98	90
Depreciation	38	36
Taxes, other than income	5	4
Total Operating Expenses	303	325
Operating Income	50	73
Other Income (Expense) - net	1	(1)
Interest Expense	11	11
Income from Continuing Operations Before Income Taxes	40	61
Income Taxes	15	22
Net Income	25	39
KU [Member]
Operating Revenues
Retail electric	376	395
Wholesale energy marketing
Electric revenue from affiliates	4	11
Total Operating Revenues	380	406
Operation
Fuel	124	130
Energy purchases - realized	5	8
Energy purchases from affiliates	24	27
Other operation and maintenance	95	84
Depreciation	48	45
Taxes, other than income	6	5
Total Operating Expenses	302	299
Operating Income	78	107
Other Income (Expense) - net	(1)	1
Interest Expense	17	18
Income from Continuing Operations Before Income Taxes	60	90
Income Taxes	22	32
Net Income	$ 38	$ 58