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Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Earnings Per Share [Abstract] |  |
Net income | $ 1,429 | $ 1,826
Less: |  |
Net income attributable to noncontrolling interests | 21 | 10
Preferred stock dividends | 45 | 57
Preferred stock discount accretion and redemptions | 2 | 1
Net income attributable to common shareholders | 1,361 | 1,758
Less: Dividends and undistributed earnings allocated to nonvested restricted shares | 6 | 8
Net income attributable to basic common shareholders | $ 1,355 | $ 1,750
Basic weighted-average common shares outstanding (in shares) | 420 | 426
Basic earnings per common share (in dollars per share) | $ 3.23 | $ 4.11
Net income attributable to diluted common shareholders | $ 1,355 | $ 1,750
Diluted (in shares) | 420 | 426
Diluted earnings per common share (in dollars per share) | $ 3.23 | $ 4.10

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