Represents contract holder funds on investment contracts as of the balance sheet date.

No definition available.

Name:	ck0000910739_ContractholderFundsOnInvestmentContracts
Namespace Prefix:	ck0000910739_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

This item represents the amount of the total change in unrealized (holding) gains or losses for the period which are included in the statement of income (or changes in net assets) in interest credited to contract holder funds. Such unrealized (holding) gains or losses relate to those assets still held at the reporting date for which fair value is measured on a recurring basis using significant unobservable inputs (Level 3).

+ References

No definition available.

+ Details

Name:	ck0000910739_FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLossIncludedInInterestCreditedToContractholderFunds
Namespace Prefix:	ck0000910739_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	ck0000910739_FairValueDisclosuresLineItems
Namespace Prefix:	ck0000910739_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

This item represents the amount of the total change in unrealized (holding) gains or losses for the period which are related to life and annuity contracts benefits. Such unrealized (holding) gains or losses relate to those liabilities still held at the reporting date for which fair value is measured on a recurring basis using significant unobservable inputs (Level 3).

+ References

No definition available.

+ Details

Name:	ck0000910739_FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLossIncludedInLifeAndAnnuityContractBenefits
Namespace Prefix:	ck0000910739_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Fair Value Unobservable Input Reinstatement Rate

+ References

No definition available.

+ Details

Name:	ck0000910739_FairValueUnobservableInputReinstatementRate
Namespace Prefix:	ck0000910739_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Fair value portion of liability related to investment contracts for example, but not limited to, guaranteed investment contract or annuities.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 825

-Section 25

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6487514&loc=d3e32427-158581

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 14

-Article 7

+ Details

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

Fair Value - Additional Information (Detail) (Predecessor, USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014
Fair Value Disclosures [Line Items]
Fair value reinsurement rate				100.00%
Gains (losses) for Level 3 assets still held at the balance sheet date, included in interest credited to contract holder funds	$ 17,600,000	$ 33,000,000	$ 125,900,000
Gains (losses) for Level 3 liabilities still held at the balance sheet date, included in life and annuity contract benefits	946,000	10,200,000	5,100,000
Quoted prices in active markets for identical assets (Level 1)
Fair Value Disclosures [Line Items]
Fair value measurement of investment				15,000,000
Carrying value
Fair Value Disclosures [Line Items]
Contractholder funds on investment contracts		7,760,000,000
Fair value
Fair Value Disclosures [Line Items]
Contractholder funds on investment contracts		$ 7,660,000,000