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Share Based Compensation - Stock Option Activity (Details) shares in Thousands, Option in Thousands | 12 Months Ended
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Dec. 31, 2022 Option $ / shares shares | Dec. 31, 2021 Option $ / shares shares
Number |  |
Outstanding, beginning of year | Option | 37,090 | 38,373
Granted | Option | 2,191 | 3,457
Exercised as options for common shares | Option | (13,158) | (245)
Forfeited/expired | shares | (5,055) | (4,495)
Outstanding, end of year | Option | 21,068 | 37,090
Exercisable, end of year | Option | 16,407 | 28,421
Weighted Average Exercise Price |  |
Outstanding, beginning of year | $ 38.39 | $ 39.65
Granted | 37.22 | 22.71
Exercised as options for common shares | 37.69 | 29.82
Forfeited/expired | 38.99 | 37.62
Outstanding, end of year | 38.55 | 38.39
Exercisable, end of year | $ 40.19 | $ 39.87

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