Financing Activities (Long-term Debt and Equity Securities) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	4 Months Ended	1 Months Ended
	May 01, 2014 Purchase Contacts 2011 [Member]	Mar. 31, 2014 PPL Capital Funding [Member] Equity Units 2011 [Member] Junior Subordinated Notes [Member]	Mar. 31, 2014 PPL Capital Funding [Member] Equity Units 2011 [Member] Remarketed [Member] Junior Subordinated Notes [Member]	Mar. 31, 2014 PPL Capital Funding [Member] Equity Units 2011 [Member] Exchanged [Member] Junior Subordinated Notes [Member]	Mar. 31, 2014 PPL Capital Funding [Member] Equity Units 2011 [Member] Exchanged [Member] Junior Subordinated Notes [Member]	Mar. 31, 2014 PPL Capital Funding [Member] Equity Units 2011 [Member] Exchanged [Member] Senior Unsecured Notes [Member]	Mar. 31, 2014 PPL Capital Funding [Member] Equity Units 2011 [Member] Exchanged [Member] Senior Unsecured Notes [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount			$ 978	$ 350	$ 400	$ 350	$ 400
Stated interest rate			4.32%	2.189%	3.184%	3.95%	5.00%
Maturity date			May 01, 2019	Mar. 15, 2017	Mar. 15, 2019	Mar. 15, 2024	Mar. 15, 2044
Portion of total principal settled in cash			228
Principal amount extinguished				350	400
Gain (loss) on extinguishment of debt		(9)
Equity Securities (Numeric) [Abstract]
Shares of PPL common stock issued	31.7
Price per share of PPL common stock issued	$ 30.86
Net cash received on stock transaction	$ 978