Revenue from Contracts with Customers (Tables)

6 Months Ended

Jun. 30, 2019

Revenue from Contracts with Customers [Line Items]

Reconciliation of Revenue from Contracts with Customers [Table Text Block]

The following tables reconcile "Operating Revenues" included in each Registrant's Statement of Income with revenues generated from contracts with customers for the periods ended June 30.

	2019 Three Months
	PPL			PPL Electric			LKE			LG&E			KU
Operating Revenues (a)	$	1,803		$	521		$	732		$	334		$	406
Revenues derived from:
Alternative revenue programs (b)	(20		)	(2		)	(18		)	(3		)	(15		)
Other (c)	(10		)	(2		)	(6		)	(3		)	(3		)
Revenues from Contracts with Customers	$	1,773		$	517		$	708		$	328		$	388
	2018 Three Months
	PPL			PPL Electric			LKE			LG&E			KU
Operating Revenues (a)	$	1,848		$	517		$	743		$	335		$	414
Revenues derived from:
Alternative revenue programs (b)	9			—			9			6			3
Other (c)	(13		)	(2		)	(4		)	(2		)	(2		)
Revenues from Contracts with Customers	$	1,844		$	515		$	748		$	339		$	415

	2019 Six Months
	PPL			PPL Electric			LKE			LG&E			KU
Operating Revenues (a)	$	3,882		$	1,166		$	1,577		$	744		$	856
Revenues derived from:
Alternative revenue programs (b)	(26		)	(6		)	(20		)	(5		)	(15		)
Other (c)	(19		)	(5		)	(10		)	(4		)	(6		)
Revenues from Contracts with Customers	$	3,837		$	1,155		$	1,547		$	735		$	835

	2018 Six Months
	PPL			PPL Electric			LKE			LG&E			KU
Operating Revenues (a)	$	3,974		$	1,156		$	1,615		$	754		$	885
Revenues derived from:
Alternative revenue programs (b)	41			2			39			20			19
Other (c)	(28		)	(6		)	(9		)	(3		)	(6		)
Revenues from Contracts with Customers	$	3,987		$	1,152		$	1,645		$	771		$	898

(a) PPL includes $541 million and $1,124 million for the three and six months ended June 30, 2019 and $584 million and $1,199 million for the three and six months ended June 30, 2018 of revenues from external customers reported by the U.K. Regulated segment. PPL Electric and LKE represent revenues from external customers reported by the Pennsylvania Regulated and Kentucky Regulated segments. See Note 3 for additional information.

(b) Alternative revenue programs include the transmission formula rate for PPL Electric, the ECR and DSM programs for LKE, LG&E and KU, the GLT program for LG&E, and the generation formula rate for KU. This line item shows the over/under collection of these rate mechanisms with over-collections of revenue shown as positive amounts in the table above and under-collections shown as negative amounts.

(c)

Represents additional revenues outside the scope of revenues from contracts with customers such as leases and other miscellaneous revenues.

Disaggregation of Revenue [Table Text Block]

The following tables show revenues from contracts with customers disaggregated by customer class for the periods ended June 30.

	2019 Three Months
	PPL		PPL Electric		LKE		LG&E		KU
Licensed energy suppliers (a)	$	510	$	—	$	—	$	—	$	—
Residential	572		301		271		138		133
Commercial	302		87		215		108		107
Industrial	156		15		141		43		98
Other (b)	117		13		66		29		37
Wholesale - municipal	4		—		4		—		4
Wholesale - other (c)	11		—		11		10		9
Transmission	101		101		—		—		—
Revenues from Contracts with Customers	$	1,773	$	517	$	708	$	328	$	388
	2018 Three Months
	PPL		PPL Electric		LKE		LG&E		KU
Licensed energy suppliers (a)	$	547	$	—	$	—	$	—	$	—
Residential	588		300		288		146		142
Commercial	296		89		207		107		100
Industrial	155		12		143		45		98
Other (b)	114		13		67		30		37
Wholesale - municipal	31		—		31		—		31
Wholesale - other (c)	12		—		12		11		7
Transmission	101		101		—		—		—
Revenues from Contracts with Customers	$	1,844	$	515	$	748	$	339	$	415

	2019 Six Months
	PPL		PPL Electric		LKE		LG&E		KU
Licensed energy suppliers (a)	$	1,066	$	—	$	—	$	—	$	—
Residential	1,350		708		642		327		315
Commercial	621		182		439		229		210
Industrial	306		32		274		87		187
Other (b)	232		27		136		62		74
Wholesale - municipal	32		—		32		—		32
Wholesale - other (c)	24		—		24		30		17
Transmission	206		206		—		—		—
Revenues from Contracts with Customers	$	3,837	$	1,155	$	1,547	$	735	$	835
	2018 Six Months
	PPL		PPL Electric		LKE		LG&E		KU
Licensed energy suppliers (a)	$	1,131	$	—	$	—	$	—	$	—
Residential	1,392		708		684		343		341
Commercial	621		187		434		231		203
Industrial	310		25		285		89		196
Other (b)	220		26		135		61		74
Wholesale - municipal	61		—		61		—		61
Wholesale - other (c)	46		—		46		47		23
Transmission	206		206		—		—		—
Revenues from Contracts with Customers	$	3,987	$	1,152	$	1,645	$	771	$	898

(a) Represents customers of WPD.

(b) Primarily includes revenues from pole attachments, street lighting, other public authorities and other non-core businesses.

(c)

Includes wholesale power and transmission revenues. LG&E and KU amounts include intercompany power sales and transmission revenues, which are eliminated upon consolidation at LKE.

Credit Loss Recognized from Contracts with Customers [Table Text Block]

The following table shows the accounts receivable balances that were impaired for the periods ended June 30.

	Three Months				Six Months
	2019		2018		2019		2018
PPL	$	2	$	3	$	11	$	13
PPL Electric	—		3		6		10
LKE	1		1		3		3
LG&E	—		—		1		1
KU	1		1		2		2

Contract with Customer, Asset and Liability [Table Text Block]

The following table shows the balances and certain activity of contract liabilities resulting from contracts with customers.

	PPL		PPL Electric		LKE		LG&E		KU
Contract liabilities at December 31, 2018	$	42	$	23	$	9	$	5	$	4
Contract liabilities at June 30, 2019	47		22		9		5		4
Revenue recognized during the six months ended June 30, 2019 that was included in the contract liability balance at December 31, 2018	29		11		9		5		4
Contract liabilities at December 31, 2017	$	29	$	19	$	8	$	4	$	4
Contract liabilities at June 30, 2018	38		14		8		4		3
Revenue recognized during the six months ended June 30, 2018 that was included in the contract liability balance at December 31, 2017	18		8		8		4		4