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Equity (Details 3) - USD ($) shares in Millions, $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Statement of changes in equity [abstract] |  |  |
Treasury shares acquired to be cancelled | (126.2) | (30.7) | (32.6)
Shares acquired for cancellation, equity impact | $ (10,787) | $ (2,775) | $ (2,897)
Other share purchases | (1.4) | (1.5) | (1.7)
Other share purchases, equity impact | $ (123) | $ (145) | $ (159)
Purchase of treasury shares | (127.6) | (32.2) | (34.3)
Purchase of treasury shares, equity impact | $ (10,910) | $ (2,920) | $ (3,056)
Exercise of options and employee transactions shares | 1.9 | 0.6 | 14.7
Exercise of options and employee transactions, equity impact | $ 88 | $ 39 | $ 806
Equity based compensation shares | 10.4 | 9.6 | 11.0
Equity-based compensation, equity impact | $ 854 | $ 745 | $ 730
Shares delivered to divested business employees | 0.0 | 0.1 | 0.4
Shares delivered to divested business employees, equity impact | $ 5 | $ 17 | $ 30
Total number of outstanding treasury shares | (115.3) | (21.9) | (8.2)
Total equity impact of treasury share movements | $ (9,963) | $ (2,119) | $ (1,490)

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