Schedule II - Primerica, Inc. (Parent Only) - Condensed Statements of Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Condensed Financial Statements, Captions [Line Items]
Net Income (Loss)	$ 576,601	$ 472,068	$ 477,362
Unrealized investment gains (losses):
Change in unrealized holding gains (losses) on available-for-sale securities	87,390	(385,735)	(78,348)
Reclassification adjustment for investment (gains) losses included in net income	2,811	(1,387)	(3,849)
Effect of change in discount rate assumptions on the liability for future policy benefits	(216,301)	1,739,762	347,041
Foreign currency translation adjustments:
Equity in unrealized foreign currency translation gains (losses) of subsidiaries	10,044	(20,826)	6,969
Total other comprehensive income (loss) before income taxes	(116,056)	1,331,814	271,813
Income tax expense (benefit) related to items of other comprehensive income (loss)	(27,458)	288,689	56,753
Other comprehensive income (loss), net of income taxes	(88,598)	1,043,125	215,060
Total comprehensive income (loss)	488,003	1,510,155	691,045
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Net Income (Loss)	576,601	472,068	477,362
Unrealized investment gains (losses):
Equity in unrealized holding gains (losses) on investment securities held by subsidiaries	69,663	(299,847)	(63,089)
Change in unrealized holding gains (losses) on available-for-sale securities	1,600	(5,201)	(1,483)
Reclassification adjustment for investment (gains) losses included in net income	(84)	(872)	(115)
Effect of change in discount rate assumptions on the liability for future policy benefits	(169,502)	1,368,596	272,442
Foreign currency translation adjustments:
Equity in unrealized foreign currency translation gains (losses) of subsidiaries	10,044	(20,826)	6,969
Total other comprehensive income (loss) before income taxes	(88,279)	1,041,850	214,724
Income tax expense (benefit) related to items of other comprehensive income (loss)	319	(1,275)	(336)
Other comprehensive income (loss), net of income taxes	(88,598)	1,043,125	215,060
Total comprehensive income (loss)	$ 488,003	$ 1,515,193	$ 692,422