Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Fixed maturities, available for sale, amortized cost	$ 17,805,309	$ 17,197,145
Fixed maturities, available for sale, allowance for credit losses	387	3,346
Other long-term investments under fair value option	793,925	546,981
Total long-term debt, fair value	$ 1,667,009	$ 1,871,754
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	320,000,000	320,000,000
Common stock, shares issued (in shares)	109,218,183	113,218,183
Common stock, shares outstanding (in shares)	109,218,183	113,218,183
Common stock, shares held in treasury (in shares)	9,650,845	9,420,699
Partnership Interest - Fair Value Option | Investment in limited partnerships
Other long-term investments under fair value option	$ 640,263	$ 385,038