Name:	cik777917_CreditDerivativeCurrentFairValueOnSurplusNoteIssuedByCompany
Namespace Prefix:	cik777917_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Represents the maximum potential amount of future payments (undiscounted) the Company could be required to make under this credit derivative written on a Surplus Note issued by the Company before reduction for potential recoveries under recourse or collateralization provision in the credit derivative.

No definition available.

Name:	cik777917_CreditDerivativeMaximumExposureOnSurplusNoteIssuedByCompany
Namespace Prefix:	cik777917_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Describes the fair value of purchased in the context of the estimate of potential recoveries, any purchased credit protection with identical underlying(s).

No definition available.

Name:	cik777917_CreditDerivativeProtectionPurchasedFairValue
Namespace Prefix:	cik777917_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Describes notional amount in the context of the estimate of potential recoveries, any purchased credit protection with identical underlying(s).

No definition available.

Name:	cik777917_CreditprotectionpurchasednotionalAmounts
Namespace Prefix:	cik777917_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The fair value of embedded derivatives was a liability included in Fixed Maturities AFS.

No definition available.

Name:	cik777917_FvOfEmbeddedDerivativesIncludedInFixedMaturitiesAfs
Namespace Prefix:	cik777917_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The fair value of embedded derivatives was a liability included in Future policy benefits.

No definition available.

Name:	cik777917_FvOfEmbeddedDerivativesIncludedInFuturePolicyBenefits
Namespace Prefix:	cik777917_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Exposure of Embedded credit derivative on Externally Managed Investments in the European Market.

No definition available.

Name:	cik777917_NotionalMaximumExposureOfEmbeddedCreditDerivativeOnExternallyManagedInvestmentsInEuropeanMarketUndiscounted
Namespace Prefix:	cik777917_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The fair value of the embedded derivatives related to the reinsurance of certain of these benefits to Pruco Re included in Reinsurance recoverables.

No definition available.

Name:	cik777917_PrucoReFvOfEmbeddedDerivativesRelatedToReinsuranceRecoverables
Namespace Prefix:	cik777917_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Maximum length of time over which the entity is hedging its exposure to the variability in future cash flows for forecasted transactions, excluding those forecasted transactions related to the payment of variable interest on existing financial instruments, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=7668309&loc=d3e80748-113994