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Equity (Share Repurchases) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 3 Months Ended | 6 Months Ended
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Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Equity [Abstract] |  |  |  |
Number of shares repurchased | 34 | 16 | 71 | 16
Cash paid for shares repurchased | $ 3,331 | $ 984 | $ 6,177 | $ 984
Average cost per share | $ 95.46 | $ 63.00 | $ 85.31 | $ 63.00

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