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Share-Based Compensation Plan (Tables)
12 Months Ended
Dec. 31, 2022
Share-Based Payment Arrangements [Abstract]  
Number of share awards outstanding The number of Share Awards outstanding is detailed below:
(000s)Number of
 restricted awards
Number of
 performance awards
Total number of
 Share Awards
Balance, December 31, 20204,122 4,088 8,210 
Granted— 4,067 4,067 
Added by performance factor— 669 669 
Vested(1,861)(1,152)(3,013)
Forfeited(168)(291)(459)
Balance, December 31, 20212,093 7,381 9,474 
Granted68 1,391 1,459 
Vested(1,377)(3,630)(5,007)
Forfeited(22)(346)(368)
Balance, December 31, 2022762 4,796 5,558