Adoption of Accounting Guidance (Tables)

6 Months Ended

Jun. 30, 2018

Adoption of Accounting Guidance [Abstract]

Schedule of Non-Service Benefits Costs (Credits) [Table Text Block]

The following provides the non-service cost components of net periodic benefits (costs) or credits presented in "Other Income (Expense) - net" in 2018 and reclassified from "Other operation and maintenance" to "Other Income (Expense) - net" in 2017 on the Statements of Income as a result of the adoption.

	Three Months					Six Months
	2018			2017		2018			2017
PPL	$	66		$	44	$	134		$	82
PPL Electric	1			1		3			—
LKE	—			—		2			(2		)
LG&E	(2		)	—		(1		)	(2		)
KU	1			—		2			(1		)

Reconciliation of Cash, Cash Equivalents and Restricted Cash from the Balance Sheet to Cash Flow Statement

The following provides a reconciliation of Cash, Cash Equivalents and Restricted Cash reported within the Balance Sheets that sum to the total of the same amounts shown on the Statements of Cash Flows:

	PPL				PPL Electric
	June 30, 2018		December 31, 2017		June 30, 2018		December 31, 2017
Cash and cash equivalents	$	852	$	485	$	489	$	49
Restricted cash - current (a)	3		3		2		2
Restricted cash - noncurrent (a)	20		23		—		—
Total Cash, Cash Equivalents and Restricted Cash	$	875	$	511	$	491	$	51

(a) Bank deposits and other cash equivalents that are restricted by agreement or that have been clearly designated for a specific purpose are classified as restricted cash. On the Balance Sheets, the current portion of restricted cash is included in "Other current assets," while the noncurrent portion is included in "Other noncurrent assets."