Represents the term of the letter of credit of the entity.

No definition available.

Name:	plico_LetterOfCreditTerm
Namespace Prefix:	plico_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the maximum amount up to which the borrowing capacity under the letter of credit arrangements will be increased.

+ References

No definition available.

+ Details

Name:	plico_LettersOfCreditMaximumAmountUpToWhichBorrowingCapacityWillBeIncreased
Namespace Prefix:	plico_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the maximum borrowing capacity under the letters of credit.

+ References

No definition available.

+ Details

Name:	plico_LettersOfCreditMaximumBorrowingCapacity
Namespace Prefix:	plico_
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_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Gain (loss) related to the termination of a contract between the parties. The termination may be due to many causes including early termination of a lease by a lessee, a breach of contract by one party, or a failure to perform.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

+ Details

Name:	us-gaap_GainLossOnContractTermination
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_LetterOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=plico_GoldenGateIIIMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=plico_ThirdAmendedandRestatedReimbursementAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=plico_GoldenGateIVMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=plico_ReimbursementAgreementMember
Namespace Prefix:
Data Type:	na
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Period Type:

DEBT AND OTHER OBLIGATIONS - Letters of Credit (Details) - Letter of Credit - USD ($)		12 Months Ended
	Oct. 01, 2020	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2017	Dec. 31, 2016
Golden Gate III Vermont Captive Insurance Company (Golden Gate III) \| Third Amended and Restated Reimbursement Agreement
Debt Instrument [Line Items]
Maximum increase of borrowing capacity					$ 935,000,000.0
Letter of credit outstanding			$ 750,000,000.0
Letter of credit term		15 years
Early termination fees	$ 11,000,000
Golden Gate IV Vermont Captive Insurance Company (Golden Gate IV) \| Third Amended and Restated Reimbursement Agreement
Debt Instrument [Line Items]
Early termination fees	$ 3,700,000
Golden Gate IV Vermont Captive Insurance Company (Golden Gate IV) \| Reimbursement Agreement
Debt Instrument [Line Items]
Letter of credit outstanding		$ 740,000,000
Letter of credit term		12 years
Maximum LOC borrowing capacity				$ 790,000,000