Debt Service Coverage Ratios

No definition available.

Name:	cik777917_DebtServiceCoverageRatios
Namespace Prefix:	cik777917_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

DebtServiceCoverageRatiosGreaterThan

+ References

No definition available.

+ Details

Name:	cik777917_DebtServiceCoverageRatiosGreaterThan
Namespace Prefix:	cik777917_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

PercentageOfLoanToValueRatioLessThan

+ References

No definition available.

+ Details

Name:	cik777917_PercentageOfLoanToValueRatioLessThan
Namespace Prefix:	cik777917_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage Of Loan To value Ratio

+ References

No definition available.

+ Details

Name:	cik777917_PercentageOfLoanTovalueRatioGreaterThan
Namespace Prefix:	cik777917_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Repurchase and Resale Agreements, Collateral, Percentage

+ References

No definition available.

+ Details

Name:	cik777917_RepurchaseandResaleAgreementsCollateralPercentage
Namespace Prefix:	cik777917_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Securities Loaned Transactions Collateral Fair Value of Domestic Securities

+ References

No definition available.

+ Details

Name:	cik777917_SecuritiesLoanedTransactionsCollateralFairValueofDomesticSecurities
Namespace Prefix:	cik777917_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Securities Loaned Transactions Collateral Maximum

+ References

No definition available.

+ Details

Name:	cik777917_SecuritiesLoanedTransactionsCollateralMaximum
Namespace Prefix:	cik777917_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

UncertainTaxPositionsMeasurementPercentage

+ References

No definition available.

+ Details

Name:	cik777917_UncertainTaxPositionsMeasurementPercentage
Namespace Prefix:	cik777917_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	us-gaap_AccountingPoliciesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The carrying amount of the asset transferred to a third party to serve as a deposit, which typically serves as security against failure by the transferor to perform under terms of an agreement.

+ References

+ Details

Name:	us-gaap_DepositAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of funds held as security for payments to be received under reinsurance contracts.

+ References

No definition available.

+ Details

Name:	us-gaap_FundsHeldUnderReinsuranceAgreementsLiability
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The cumulative amount of the reporting entity's undistributed earnings or deficit.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(30)(a)(3))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 55
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 65
-Paragraph 15
-Subparagraph (g)(2)
-URI http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(23)(a)(4))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 40
-Section 65
-Paragraph 2
-Subparagraph (h)(2)
-URI http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641

Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 40
-Section 65
-Paragraph 2
-Subparagraph (g)(2)(i)
-URI http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641

+ Details

Name:	us-gaap_RetainedEarningsAccumulatedDeficit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RestatementAxis=srt_RestatementAdjustmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=us-gaap_AccountingStandardsUpdate201613Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Significant Accounting Policies and Pronouncements (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Jan. 01, 2020
Accounting Policies [Abstract]
Commercial mortgage and other loans, Loan-to-value ratios (greater than)	100.00%
Commercial mortgage and other loans, Loan-to-value ratios (less than)	100.00%
Commercial mortgage and other loans, Debt service coverage ratios (less than)	1.0
Commercial mortgage and agricultural mortgage loans, Debt service coverage ratios (greater than)	1.0
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained earnings	$ (437,332)	$ 1,772,398
Deposit assets related to reinsurance agreement	497,000
Funds withheld liability under reinsurance agreement	$ 419,200
Uncertain tax positions measurement percentage (greater than)	50.00%
Securities Loaned Transactions Collateral Fair Value of Domestic Securities	102.00%
Securities Loaned Transactions Collateral Fair Value of Foreign Securities	105.00%
Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Repurchase and Resale Agreements, Collateral, Percentage	95.00%
Restatement Adjustment \| ASU 2016-13
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained earnings			$ 1,800