Revenue from Contracts with Customers (Tables)

9 Months Ended

Sep. 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 September 30.

	2019 Three Months
	PPL			PPL Electric			LKE			LG&E			KU
Operating Revenues (a)	$	1,933		$	590		$	844		$	382		$	466
Revenues derived from:
Alternative revenue programs (b)	8			2			6			4			2
Other (c)	(11		)	(3		)	(6		)	(3		)	(3		)
Revenues from Contracts with Customers	$	1,930		$	589		$	844		$	383		$	465
	2018 Three Months
	PPL			PPL Electric			LKE			LG&E			KU
Operating Revenues (a)	$	1,872		$	548		$	802		$	362		$	447
Revenues derived from:
Alternative revenue programs (b)	(4		)	(3		)	(1		)	(4		)	3
Other (c)	(15		)	(3		)	(5		)	(2		)	(3		)
Revenues from Contracts with Customers	$	1,853		$	542		$	796		$	356		$	447

	2019 Nine Months
	PPL			PPL Electric			LKE			LG&E			KU
Operating Revenues (a)	$	5,815		$	1,756		$	2,421		$	1,126		$	1,322
Revenues derived from:
Alternative revenue programs (b)	(18		)	(4		)	(14		)	(1		)	(13		)
Other (c)	(30		)	(8		)	(16		)	(7		)	(9		)
Revenues from Contracts with Customers	$	5,767		$	1,744		$	2,391		$	1,118		$	1,300

	2018 Nine Months
	PPL			PPL Electric			LKE			LG&E			KU
Operating Revenues (a)	$	5,846		$	1,704		$	2,417		$	1,116		$	1,332
Revenues derived from:
Alternative revenue programs (b)	37			(1		)	38			16			22
Other (c)	(43		)	(9		)	(14		)	(5		)	(9		)
Revenues from Contracts with Customers	$	5,840		$	1,694		$	2,441		$	1,127		$	1,345

(a) PPL includes $491 million and $1,615 million for the three and nine months ended September 30, 2019 and $517 million and $1,716 million for the three and nine months ended September 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 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 September 30.

	2019 Three Months
	PPL		PPL Electric		LKE		LG&E		KU
Licensed energy suppliers (a)	$	454	$	—	$	—	$	—	$	—
Residential	708		352		356		177		179
Commercial	346		97		249		123		126
Industrial	164		16		148		47		101
Other (b)	128		12		73		31		42
Wholesale - municipality	6		—		6		—		6
Wholesale - other (c)	12		—		12		5		11
Transmission	112		112		—		—		—
Revenues from Contracts with Customers	$	1,930	$	589	$	844	$	383	$	465
	2018 Three Months
	PPL		PPL Electric		LKE		LG&E		KU
Licensed energy suppliers (a)	$	475	$	—	$	—	$	—	$	—
Residential	647		328		319		162		157
Commercial	307		88		219		112		107
Industrial	156		12		144		45		99
Other (b)	119		14		65		27		39
Wholesale - municipality	30		—		30		—		30
Wholesale - other (c)	19		—		19		10		15
Transmission	100		100		—		—		—
Revenues from Contracts with Customers	$	1,853	$	542	$	796	$	356	$	447

	2019 Nine Months
	PPL		PPL Electric		LKE		LG&E		KU
Licensed energy suppliers (a)	$	1,520	$	—	$	—	$	—	$	—
Residential	2,058		1,060		998		504		494
Commercial	967		279		688		352		336
Industrial	470		48		422		134		288
Other (b)	360		39		209		93		116
Wholesale - municipality	38		—		38		—		38
Wholesale - other (c)	36		—		36		35		28
Transmission	318		318		—		—		—
Revenues from Contracts with Customers	$	5,767	$	1,744	$	2,391	$	1,118	$	1,300
	2018 Nine Months
	PPL		PPL Electric		LKE		LG&E		KU
Licensed energy suppliers (a)	$	1,606	$	—	$	—	$	—	$	—
Residential	2,039		1,036		1,003		505		498
Commercial	928		275		653		343		310
Industrial	466		37		429		134		295
Other (b)	339		40		200		88		113
Wholesale - municipality	91		—		91		—		91
Wholesale - other (c)	65		—		65		57		38
Transmission	306		306		—		—		—
Revenues from Contracts with Customers	$	5,840	$	1,694	$	2,441	$	1,127	$	1,345

(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 September 30.

	Three Months				Nine Months
	2019		2018		2019		2018
PPL	$	11	$	11	$	22	$	24
PPL Electric	8		7		14		17
LKE	2		4		5		7
LG&E	1		2		2		3
KU	1		2		3		4

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 September 30, 2019	42		19		9		5		4
Revenue recognized during the nine months ended September 30, 2019 that was included in the contract liability balance at December 31, 2018	31		11		9		5		4
Contract liabilities at December 31, 2017	$	29	$	19	$	8	$	4	$	4
Contract liabilities at September 30, 2018	40		17		8		4		4
Revenue recognized during the nine months ended September 30, 2018 that was included in the contract liability balance at December 31, 2017	22		8		8		4		4