CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Unaudited) (Parenthetical) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012 Integer	Sep. 30, 2011 Integer	Sep. 30, 2012 Integer	Sep. 30, 2011 Integer
Vote per share of PPL's common stock	1	1	1	1
Shares of PPL common stock issued under a public equity offering (in shares)				92
Present value of the purchase Contract component of the Equity Units				$ 123
Issuance costs related to the Equity Units allocated to capital in excess of par, net of tax				18
Amount paid to redeem PPL Electric's preferred stock which was reflected as Non-controlling Interest by PPL			250
Stock-based compensation expense related to new and existing unvested equity awards	7	5	42	27
Reclassifications from Stock-based compensation to Common stock issued	(2)		(14)	(21)
PPL Electric Utilities Corp [Member]
Amount paid to redeem PPL Electric's preferred stock which was reflected as Non-controlling Interest by PPL			$ 250