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Share-Based Compensation Plan - Shares Outstanding (Details) - shares shares in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Total number of share awards |  |
Beginning balance (in shares) | 8,210 | 6,936
Granted (in shares) | 4,067 | 5,492
Added by performance factor (in shares) | 669 |
Vested and converted to common shares (in shares) | (3,013) | (2,922)
Forfeited (in shares) | (459) | (1,296)
Ending balance (in shares) | 9,474 | 8,210
Minimum |  |
Total number of share awards |  |
Payout multiplier | 0.00% |
Maximum |  |
Total number of share awards |  |
Payout multiplier | 200.00% |
Restricted awards |  |
Total number of share awards |  |
Beginning balance (in shares) | 4,122 | 3,801
Granted (in shares) | 0 | 2,239
Added by performance factor (in shares) | 0 |
Vested and converted to common shares (in shares) | (1,861) | (1,730)
Forfeited (in shares) | (168) | (188)
Ending balance (in shares) | 2,093 | 4,122
Performance awards |  |
Total number of share awards |  |
Beginning balance (in shares) | 4,088 | 3,135
Granted (in shares) | 4,067 | 3,253
Added by performance factor (in shares) | 669 |
Vested and converted to common shares (in shares) | (1,152) | (1,192)
Forfeited (in shares) | (291) | (1,108)
Ending balance (in shares) | 7,381 | 4,088

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