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v3.20.4

Consolidated Statements of Equity (Parenthetical) - $ / shares | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Shares issued pursuant to dividend reinvestment plan (in shares) | 228,498,000 | 430,462,000 | 572,928,000
Shares due to exercise of employee stock options and issuance of directors' deferred stock (in shares) | 16,887,000 | 61,571,000 | 43,150,000
Issuance of partnership units pursuant to dividend reinvestment plan (in shares) | 51,579,000 | 60,936,000 | 107,433,000
Issuance of partnership units (in shares) | 51,579,000 | 60,936,000 | 284,113,000
Series D Cumulative Redeemable Preferred Stock |  |  |
Issuance of Series D Cumulative preferred stock (in shares) |  |  | 30,000,000
Series C Cumulative Preferred Stock |  |  |
Redemption of Series C Cumulative preferred stock (in shares) |  | 42,000,000 | 30,000,000
Series E Cumulative Redeemable Preferred Stock |  |  |
Issuance of Series D Cumulative preferred stock (in shares) |  | 44,000,000 |
Dividend declared |  |  |
Distributions payable common stock and partnership units (in usd per share) | $ 0.53 | $ 0.53 | $ 0.53
Dividend declared | Series D Cumulative Redeemable Preferred Stock |  |  |
Distributions payable on preferred stock (in usd per share) | 38.28 | 38.28 | 38.28
Dividend declared | Series C Cumulative Preferred Stock |  |  |
Distributions payable on preferred stock (in usd per share) |  |  | $ 42.97
Dividend declared | Series E Cumulative Redeemable Preferred Stock |  |  |
Distributions payable on preferred stock (in usd per share) | $ 37.50 | $ 37.50 |

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