Document and Entity Information - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Mar. 10, 2016
Document And Entity Information [Abstract]
Entity Registrant Name	PRUDENTIAL ANNUITIES LIFE ASSURANCE CORP/CT
Entity Central Index Key	0000881453
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 31, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		25,000
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float	$ 0