Derivative Instruments - Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative liability collateral cash and cash equivalents	$ 32.1	$ 16.0

Derivative Liability, Collateral, Cash and Cash Equivalents

No definition available.

Name:	phlvic_DerivativeLiabilityCollateralCashandCashEquivalents
Namespace Prefix:	phlvic_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant