Subsequent Acquisition (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Jun. 30, 2011
Subsequent Acquisition [Abstract]
Agreement to purchase the acquired entity	$ 37.6

Business acquisition cost of acquired entity total maximum possible purchase price.

No definition available.

Name:	prx_BusinessAcquisitionCostOfAcquiredEntityTotalMaximumPossiblePurchasePrice
Namespace Prefix:	prx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration