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Investing Activities - Narrative (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
counterparty
security
Dec. 31, 2014
security
Concentration Risk [Line Items]    
Unrealized losses on below-investment-grade debt securities depressed of amortized cost, percentage 20.00%phlvic_UnrealizedLossesOnBelowinvestmentgradeDebtSecuritiesDepressedOfAmortizedCostPercentage  
Unrealized losses on below-investment-grade debt securities depressed of amortized cost, amount $ 1.1phlvic_UnrealizedLossesOnBelowinvestmentgradeDebtSecuritiesDepressedOfAmortizedCostAmount  
Unrealized losses on below-investment-grade debt securities depressed of amortized cost for more than 12 month, amount 0.6phlvic_UnrealizedLossesOnBelowinvestmentgradeDebtSecuritiesDepressedOfAmortizedCostForMoreThanTwelveMonthAmount  
Unrealized losses on below-investment-grade debt securities depressed of amortized cost for more than 12 month, percentage 20.00%phlvic_UnrealizedLossesOnBelowinvestmentgradeDebtSecuritiesDepressedOfAmortizedCostForMoreThanTwelveMonthPercentage  
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, number of securities 89phlvic_AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsorLongerNumberOfSecurities 127phlvic_AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsorLongerNumberOfSecurities
Carrying value of investments in non-consolidated VIEs 16.2phlvic_CarryingValueOfInvestmentsInNonconsolidatedVies 16.1phlvic_CarryingValueOfInvestmentsInNonconsolidatedVies
Fixed maturities below-investment-grade assets 226.8phlvic_FixedMaturitiesBelowinvestmentgradeAssets 186.8phlvic_FixedMaturitiesBelowinvestmentgradeAssets
Derivative assets, net of liabilities 58.3phlvic_DerivativeAssetsNetOfLiabilities  
Number of counterparties 11phlvic_NumberofCounterparties  
Debt securities, fair value 75.3phlvic_DebtSecuritiesFairValue  
Maximum amount of loss due to credit risk 133.6phlvic_MaximumAmountOfLossDueToCreditRisk  
Stockholders' Equity, Total    
Concentration Risk [Line Items]    
Concentration risk (percent) 10.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_StockholdersEquityTotalMember		  
Private Equity Investment    
Concentration Risk [Line Items]    
Equity method investments 8.9us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= us-gaap_PrivateEquityFundsMember		 8.4us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= us-gaap_PrivateEquityFundsMember
Direct Equity Investment    
Concentration Risk [Line Items]    
Equity method investments $ 3.9us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= us-gaap_EquityMethodInvestmentsMember		 $ 4.1us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= us-gaap_EquityMethodInvestmentsMember
Debt securities    
Concentration Risk [Line Items]    
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, number of securities 85phlvic_AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsorLongerNumberOfSecurities
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_DebtSecuritiesMember		  
Debt securities    
Concentration Risk [Line Items]    
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, number of securities 4phlvic_AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsorLongerNumberOfSecurities
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_EquitySecuritiesMember