Shareholders' Equity - Share Repurchase Program (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Globe Life Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Shares Acquired (in shares)	3,322	4,784	4,459
Total Cost	$ 335,145	$ 455,030	$ 380,112
Average Price (in dollars per share)	$ 100.90	$ 95.11	$ 85.24
Share Repurchase for Dilution Purposes
Equity, Class of Treasury Stock [Line Items]
Shares Acquired (in shares)	1,103	858	676
Total Cost	$ 119,493	$ 86,405	$ 63,754
Average Price (in dollars per share)	$ 108.33	$ 100.75	$ 94.28