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Debt (Tables)
 3 Months Ended
Mar. 31, 2024
Debt Disclosure [Abstract]  
Schedule of Senior Notes
Our notes payable are summarized as follows ($000’s omitted):
 March 31,
2024		December 31,
2023
5.500% unsecured senior notes due March 2026 (a)
$445,269 $455,424 
5.000% unsecured senior notes due January 2027 (a)
443,875 443,875 
7.875% unsecured senior notes due June 2032 (a)
300,000 300,000 
6.375% unsecured senior notes due May 2033 (a)
400,000 400,000 
6.000% unsecured senior notes due February 2035 (a)
300,000 300,000 
Net premiums, discounts, and issuance costs (b)
(7,693)(8,047)
Total senior notes$1,881,451 $1,891,252 
Other notes payable75,403 70,966 
Notes payable$1,956,854 $1,962,218 
Estimated fair value$2,045,752 $2,080,187 

(a)Redeemable prior to maturity; guaranteed on a senior basis by certain wholly-owned subsidiaries.
(b)The carrying value of senior notes reflects the impact of premiums, discounts, and issuance costs that are amortized to interest cost over the respective terms of the senior notes.