CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Unaudited) (Parenthetical) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2015 USD ($) Integer	Jun. 30, 2014 Integer	Jun. 30, 2015 USD ($) Integer	Jun. 30, 2014 Integer
Vote per share of PPL's common stock \| Integer	1	1	1	1
PPL Electric Utilities Corp [Member]
Non-cash contributions related to remeasurement and seperation of benefit plans	$ 47		$ 47

Amount of non-cash contributions related to the remeasurement and separation of pension and postretirement benefit plans with the spinoff entity, which impacted the subsidiaries allocated net benefit obligation from the parent.

No definition available.

Name:	ppl_CapitalContributionsFromParentNonCash
Namespace Prefix:	ppl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration