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Stock Plans (Details Textuals) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Common shares unissued and available for grant (in shares) | 12 | 14 | 9
Stock-based compensation expense | $ 326 | $ 247 | $ 280
Stock-based compensation expense, income tax benefit | $ 78 | 59 | 67
Stock Option |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock options vesting period | 3 years |  |
Stock options contractual term | 10 years |  |
Stock-based compensation, unrecognized compensation cost | $ 4 |  |
Weighted-average remaining vesting period | 1 year 3 months 18 days |  |
Intrinsic value for options exercised | $ 86 | 47 | 104
Cash received from exercise of stock options | 64 | 44 | 84
Income tax benefit related to stock option exercises | 14 | $ 7 | $ 18
RSUs |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock-based compensation, unrecognized compensation cost | $ 256 |  |
Weighted-average remaining vesting period | 1 year 10 months 24 days |  |
Vesting percentage | 25.00% |  |
RSAs/RSUs Weighted-average grant date fair value of RSAs granted (in dollars per share) | $ 123.66 | $ 124.47 | $ 96.24
Total fair value of shares vested | $ 227 | $ 291 | $ 286
Liability-Based Awards |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Service condition period | 3 years |  |
Cash paid upon vesting of PGs | $ 53 | $ 81 | $ 81

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