Document and Entity Information	12 Months Ended
	Dec. 31, 2018 USD ($) shares
Document Information [Line Items]
Entity Shell Company	false
Entity Registrant Name	TALCOTT RESOLUTION LIFE INSURANCE COMPANY
Entity Central Index Key	0000045947
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding | shares	1,000
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float | $	$ 0
Entity Emerging Growth Company	false
Entity Small Business	false