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Shareholders' Equity - Schedule of Stock Repurchases (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 3 Months Ended | 6 Months Ended | 120 Months Ended
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Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Mar. 31, 2022
Equity [Abstract] |  |  |  |  |
Shares repurchased (in shares) | 1.7 | 1.1 | 4.5 | 1.3 | 154.1
Average price per share (in dollars per share) | $ 292.06 | $ 235.84 | $ 293.56 | $ 232.53 |
Repurchase costs recorded to retained earnings | $ 500 | $ 242 | $ 1,328 | $ 292 | $ 19,600

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