Cover - shares	6 Months Ended
	Jun. 30, 2022	Aug. 12, 2022
Entity Addresses [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2022
Document Transition Report	false
Entity File Number	033-44202
Entity Incorporation, State or Country Code	AZ
Entity Tax Identification Number	06-1241288
Entity Address, Address Line One	Ten Exchange Place
Entity Address, City or Town	Jersey City
Entity Address, State or Province	NJ
Entity Address, Postal Zip Code	07302
City Area Code	(615)
Local Phone Number	981-8801
Entity Address, Address Line Two	Suite 2210
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		25,000
Amendment Flag	false
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q2
Entity Registrant Name	FORTITUDE LIFE INSURANCE & ANNUITY CO
Entity Central Index Key	0000881453
Current Fiscal Year End Date	--12-31
Former Address
Entity Addresses [Line Items]
Entity Address, Address Line One	One Corporate Drive
Entity Address, City or Town	Shelton
Entity Address, State or Province	CT
Entity Address, Postal Zip Code	06484
City Area Code	(615)
Local Phone Number	981-8801