Nature of Operations and Basis of Presentation (Narrative) (Details)	9 Months Ended
Sep. 30, 2020 entity
Product Information [Line Items]
Number of wholly owned subsidiaries	2
Lincoln Life & Annuity Company of New York [Member]
Product Information [Line Items]
Ownership percent	100.00%

The number of units or percentage investment held in the subsidiary by the limited liability company or limited partnership.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611443-123010

Name:	us-gaap_SubsidiaryOfLimitedLiabilityCompanyOrLimitedPartnershipOwnershipInterest
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration