Jointly Owned Utility Facilities (Tables)

12 Months Ended

Dec. 31, 2015

Jointly Owned Facilities [Line Items]

Jointly Owned Utility Facilities

At December 31, 2015 and 2014, the Balance Sheets reflect the owned interests in the facilities listed below.

									Construction
			Ownership				Accumulated		Work
			Interest		Electric Plant		Depreciation		in Progress
PPL and LKE
	December 31, 2015
	Generating Plants
		Trimble County Unit 1	75.00%	$	399	$	44	$	6
		Trimble County Unit 2	75.00%		1,013		141		27
	December 31, 2014
	Generating Plants
		Trimble County Unit 1	75.00%	$	309	$	51	$	59
		Trimble County Unit 2	75.00%		1,002		122		32
LG&E
	December 31, 2015
	Generating Plants
		E.W. Brown Units 6-7	38.00%	$	40	$	12
		Paddy's Run Unit 13 & E.W. Brown Unit 5	53.00%		47		10	$	1
		Trimble County Unit 1	75.00%		399		44		6
		Trimble County Unit 2	14.25%		210		28		12
		Trimble County Units 5-6	29.00%		29		6
		Trimble County Units 7-10	37.00%		71		14
		Cane Run Unit 7	22.00%		115		1		1
		E.W. Brown Solar Unit	39.00%						4
	December 31, 2014
	Generating Plants
		E.W. Brown Units 6-7	38.00%	$	40	$	10
		Paddy's Run Unit 13 & E.W. Brown Unit 5	53.00%		47		7
		Trimble County Unit 1	75.00%		309		51	$	59
		Trimble County Unit 2	14.25%		205		23		15
		Trimble County Units 5-6	29.00%		29		5
		Trimble County Units 7-10	37.00%		70		11
		Cane Run Unit 7	22.00%						113
KU
	December 31, 2015
	Generating Plants
		E.W. Brown Units 6-7	62.00%	$	65	$	19
		Paddy's Run Unit 13 & E.W. Brown Unit 5	47.00%		43		9	$	1
		Trimble County Unit 2	60.75%		803		113		15
		Trimble County Units 5-6	71.00%		70		15
		Trimble County Units 7-10	63.00%		121		23
		Cane Run Unit 7	78.00%		411		6		5
		E.W. Brown Solar Unit	61.00%						6
	December 31, 2014
	Generating Plants
		E.W. Brown Units 6-7	62.00%	$	65	$	15	$	1
		Paddy's Run Unit 13 & E.W. Brown Unit 5	47.00%		42		6
		Trimble County Unit 2	60.75%		797		98		17
		Trimble County Units 5-6	71.00%		70		11
		Trimble County Units 7-10	63.00%		120		18		1
		Cane Run Unit 7	78.00%						403

LG And E And KU Energy LLC [Member]

Jointly Owned Facilities [Line Items]

Jointly Owned Utility Facilities

At December 31, 2015 and 2014, the Balance Sheets reflect the owned interests in the facilities listed below.

									Construction
			Ownership				Accumulated		Work
			Interest		Electric Plant		Depreciation		in Progress
PPL and LKE
	December 31, 2015
	Generating Plants
		Trimble County Unit 1	75.00%	$	399	$	44	$	6
		Trimble County Unit 2	75.00%		1,013		141		27
	December 31, 2014
	Generating Plants
		Trimble County Unit 1	75.00%	$	309	$	51	$	59
		Trimble County Unit 2	75.00%		1,002		122		32
LG&E
	December 31, 2015
	Generating Plants
		E.W. Brown Units 6-7	38.00%	$	40	$	12
		Paddy's Run Unit 13 & E.W. Brown Unit 5	53.00%		47		10	$	1
		Trimble County Unit 1	75.00%		399		44		6
		Trimble County Unit 2	14.25%		210		28		12
		Trimble County Units 5-6	29.00%		29		6
		Trimble County Units 7-10	37.00%		71		14
		Cane Run Unit 7	22.00%		115		1		1
		E.W. Brown Solar Unit	39.00%						4
	December 31, 2014
	Generating Plants
		E.W. Brown Units 6-7	38.00%	$	40	$	10
		Paddy's Run Unit 13 & E.W. Brown Unit 5	53.00%		47		7
		Trimble County Unit 1	75.00%		309		51	$	59
		Trimble County Unit 2	14.25%		205		23		15
		Trimble County Units 5-6	29.00%		29		5
		Trimble County Units 7-10	37.00%		70		11
		Cane Run Unit 7	22.00%						113
KU
	December 31, 2015
	Generating Plants
		E.W. Brown Units 6-7	62.00%	$	65	$	19
		Paddy's Run Unit 13 & E.W. Brown Unit 5	47.00%		43		9	$	1
		Trimble County Unit 2	60.75%		803		113		15
		Trimble County Units 5-6	71.00%		70		15
		Trimble County Units 7-10	63.00%		121		23
		Cane Run Unit 7	78.00%		411		6		5
		E.W. Brown Solar Unit	61.00%						6
	December 31, 2014
	Generating Plants
		E.W. Brown Units 6-7	62.00%	$	65	$	15	$	1
		Paddy's Run Unit 13 & E.W. Brown Unit 5	47.00%		42		6
		Trimble County Unit 2	60.75%		797		98		17
		Trimble County Units 5-6	71.00%		70		11
		Trimble County Units 7-10	63.00%		120		18		1
		Cane Run Unit 7	78.00%						403

Louisville Gas And Electric Co [Member]

Jointly Owned Facilities [Line Items]

Jointly Owned Utility Facilities

At December 31, 2015 and 2014, the Balance Sheets reflect the owned interests in the facilities listed below.

									Construction
			Ownership				Accumulated		Work
			Interest		Electric Plant		Depreciation		in Progress
PPL and LKE
	December 31, 2015
	Generating Plants
		Trimble County Unit 1	75.00%	$	399	$	44	$	6
		Trimble County Unit 2	75.00%		1,013		141		27
	December 31, 2014
	Generating Plants
		Trimble County Unit 1	75.00%	$	309	$	51	$	59
		Trimble County Unit 2	75.00%		1,002		122		32
LG&E
	December 31, 2015
	Generating Plants
		E.W. Brown Units 6-7	38.00%	$	40	$	12
		Paddy's Run Unit 13 & E.W. Brown Unit 5	53.00%		47		10	$	1
		Trimble County Unit 1	75.00%		399		44		6
		Trimble County Unit 2	14.25%		210		28		12
		Trimble County Units 5-6	29.00%		29		6
		Trimble County Units 7-10	37.00%		71		14
		Cane Run Unit 7	22.00%		115		1		1
		E.W. Brown Solar Unit	39.00%						4
	December 31, 2014
	Generating Plants
		E.W. Brown Units 6-7	38.00%	$	40	$	10
		Paddy's Run Unit 13 & E.W. Brown Unit 5	53.00%		47		7
		Trimble County Unit 1	75.00%		309		51	$	59
		Trimble County Unit 2	14.25%		205		23		15
		Trimble County Units 5-6	29.00%		29		5
		Trimble County Units 7-10	37.00%		70		11
		Cane Run Unit 7	22.00%						113
KU
	December 31, 2015
	Generating Plants
		E.W. Brown Units 6-7	62.00%	$	65	$	19
		Paddy's Run Unit 13 & E.W. Brown Unit 5	47.00%		43		9	$	1
		Trimble County Unit 2	60.75%		803		113		15
		Trimble County Units 5-6	71.00%		70		15
		Trimble County Units 7-10	63.00%		121		23
		Cane Run Unit 7	78.00%		411		6		5
		E.W. Brown Solar Unit	61.00%						6
	December 31, 2014
	Generating Plants
		E.W. Brown Units 6-7	62.00%	$	65	$	15	$	1
		Paddy's Run Unit 13 & E.W. Brown Unit 5	47.00%		42		6
		Trimble County Unit 2	60.75%		797		98		17
		Trimble County Units 5-6	71.00%		70		11
		Trimble County Units 7-10	63.00%		120		18		1
		Cane Run Unit 7	78.00%						403

Kentucky Utilities Co [Member]

Jointly Owned Facilities [Line Items]

Jointly Owned Utility Facilities

At December 31, 2015 and 2014, the Balance Sheets reflect the owned interests in the facilities listed below.

									Construction
			Ownership				Accumulated		Work
			Interest		Electric Plant		Depreciation		in Progress
PPL and LKE
	December 31, 2015
	Generating Plants
		Trimble County Unit 1	75.00%	$	399	$	44	$	6
		Trimble County Unit 2	75.00%		1,013		141		27
	December 31, 2014
	Generating Plants
		Trimble County Unit 1	75.00%	$	309	$	51	$	59
		Trimble County Unit 2	75.00%		1,002		122		32
LG&E
	December 31, 2015
	Generating Plants
		E.W. Brown Units 6-7	38.00%	$	40	$	12
		Paddy's Run Unit 13 & E.W. Brown Unit 5	53.00%		47		10	$	1
		Trimble County Unit 1	75.00%		399		44		6
		Trimble County Unit 2	14.25%		210		28		12
		Trimble County Units 5-6	29.00%		29		6
		Trimble County Units 7-10	37.00%		71		14
		Cane Run Unit 7	22.00%		115		1		1
		E.W. Brown Solar Unit	39.00%						4
	December 31, 2014
	Generating Plants
		E.W. Brown Units 6-7	38.00%	$	40	$	10
		Paddy's Run Unit 13 & E.W. Brown Unit 5	53.00%		47		7
		Trimble County Unit 1	75.00%		309		51	$	59
		Trimble County Unit 2	14.25%		205		23		15
		Trimble County Units 5-6	29.00%		29		5
		Trimble County Units 7-10	37.00%		70		11
		Cane Run Unit 7	22.00%						113
KU
	December 31, 2015
	Generating Plants
		E.W. Brown Units 6-7	62.00%	$	65	$	19
		Paddy's Run Unit 13 & E.W. Brown Unit 5	47.00%		43		9	$	1
		Trimble County Unit 2	60.75%		803		113		15
		Trimble County Units 5-6	71.00%		70		15
		Trimble County Units 7-10	63.00%		121		23
		Cane Run Unit 7	78.00%		411		6		5
		E.W. Brown Solar Unit	61.00%						6
	December 31, 2014
	Generating Plants
		E.W. Brown Units 6-7	62.00%	$	65	$	15	$	1
		Paddy's Run Unit 13 & E.W. Brown Unit 5	47.00%		42		6
		Trimble County Unit 2	60.75%		797		98		17
		Trimble County Units 5-6	71.00%		70		11
		Trimble County Units 7-10	63.00%		120		18		1
		Cane Run Unit 7	78.00%						403