Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

The assets and liabilities measured at fair value were:

	March 31, 2018								December 31, 2017
	Total		Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3
PPL
Assets
Cash and cash equivalents	$	629	$	629	$	—	$	—	$	485	$	485	$	—	$	—
Restricted cash and cash equivalents (a)	24		24		—		—		26		26		—		—
Price risk management assets (b):
Foreign currency contracts	97		—		97		—		163		—		163		—
Cross-currency swaps	79		—		79		—		101		—		101		—
Total price risk management assets	176		—		176		—		264		—		264		—
Total assets	$	829	$	653	$	176	$	—	$	775	$	511	$	264	$	—
Liabilities
Price risk management liabilities (b):
Interest rate swaps	$	22	$	—	$	22	$	—	$	26	$	—	$	26	$	—
Foreign currency contracts	167		—		167		—		148		—		148		—
Total price risk management liabilities	$	189	$	—	$	189	$	—	$	174	$	—	$	174	$	—
PPL Electric
Assets
Cash and cash equivalents	$	20	$	20	$	—	$	—	$	49	$	49	$	—	$	—
Restricted cash and cash equivalents (a)	2		2		—		—		2		2		—		—
Total assets	$	22	$	22	$	—	$	—	$	51	$	51	$	—	$	—
LKE
Assets
Cash and cash equivalents	$	27	$	27	$	—	$	—	$	30	$	30	$	—	$	—
Total assets	$	27	$	27	$	—	$	—	$	30	$	30	$	—	$	—
Liabilities
Price risk management liabilities:
Interest rate swaps	$	22	$	—	$	22	$	—	$	26	$	—	$	26	$	—
Total price risk management liabilities	$	22	$	—	$	22	$	—	$	26	$	—	$	26	$	—
LG&E
Assets
Cash and cash equivalents	$	14	$	14	$	—	$	—	$	15	$	15	$	—	$	—
Total assets	$	14	$	14	$	—	$	—	$	15	$	15	$	—	$	—
Liabilities
Price risk management liabilities:
Interest rate swaps	$	22	$	—	$	22	$	—	$	26	$	—	$	26	$	—
Total price risk management liabilities	$	22	$	—	$	22	$	—	$	26	$	—	$	26	$	—

	March 31, 2018								December 31, 2017
	Total		Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3
KU
Assets
Cash and cash equivalents	$	11	$	11	$	—	$	—	$	15	$	15	$	—	$	—
Total assets	$	11	$	11	$	—	$	—	$	15	$	15	$	—	$	—

(a) Current portion is included in "Other current assets" and long-term portion is included in "Other noncurrent assets" on the Balance Sheets.

(b) Current portion is included in "Price risk management assets" and "Other current liabilities" and noncurrent portion is included in "Price risk management assets" and "Other deferred credits and noncurrent liabilities" on the Balance Sheets.

Fair Value, by Balance Sheet Grouping

The carrying amounts of long-term debt on the Balance Sheets and their estimated fair values are set forth below.

	March 31, 2018				December 31, 2017
	Carrying Amount (a)		Fair Value		Carrying Amount (a)		Fair Value
PPL	$	20,464	$	23,577	$	20,195	$	23,783
PPL Electric	3,298		3,632		3,298		3,769
LKE	5,259		5,654		5,159		5,670
LG&E	1,808		1,925		1,709		1,865
KU	2,329		2,546		2,328		2,605

(a) Amounts are net of debt issuance costs.