Shareholders' Equity - Schedule of Share Repurchase Program (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Globe Life Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Shares Acquired (in shares)	5,420	10,086	3,369
Total Cost	$ 685,151	$ 945,637	$ 380,103
Average Price (in dollars per share)	$ 126.41	$ 93.76	$ 112.84
Share Repurchase for Dilution Purposes
Equity, Class of Treasury Stock [Line Items]
Shares Acquired (in shares)	1,469	501	1,080
Total Cost	$ 189,669	$ 48,026	$ 127,155
Average Price (in dollars per share)	$ 129.14	$ 95.75	$ 117.72