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Supplemental Disclosures of Cash Flow Information - Summary (Details) $ in Thousands, £ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2021 USD ($) shares | Nov. 30, 2021 USD ($) shares | Dec. 31, 2023 USD ($) mortgage | Dec. 31, 2022 USD ($) mortgage property shares | Dec. 31, 2021 USD ($) sterlingDenominatedMortgage mortgage | Dec. 31, 2021 GBP (£) sterlingDenominatedMortgage mortgage
Supplemental disclosures: |  |  |  |  |  |
Cash paid for interest |  |  | $ 692,004 | $ 501,716 | $ 355,483 |
Cash paid for income taxes |  |  | 12,283 | 45,031 | 19,676 |
Cash paid for merger and integration-related costs |  |  | 11,329 | 22,783 | 157,115 |
Non-cash activities: |  |  |  |  |  |
Increase in noncontrolling interests from property acquisitions |  |  | 39,156 | 0 | 0 |
Mortgages assumed at fair value |  |  | 0 | 45,079 | 911,525 |
Notes payable assumed at fair value |  |  | 0 | 0 | 4,946,965 |
Non-cash assets and liabilities assumed in merger |  |  | 0 | 0 | 11,559,875 |
Non-cash assets and liabilities distributed in Orion Divestiture |  |  | 0 | 0 | 1,142,121 |
Contributions by noncontrolling interests |  |  | $ 40,097 | 51,221 | $ 43,390 |
Mortgages payable |  |  |  |  |  |
Non-cash activities: |  |  |  |  |  |
Mortgages assumed at fair value |  |  |  | $ 45,100 |  | £ 31.0
Number of mortgages assumed during period |  |  | 0 | 8 | 1 | 1
Mortgages payable | VEREIT Inc |  |  |  |  |  |
Non-cash activities: |  |  |  |  |  |
Mortgages assumed at fair value |  |  |  |  | $ 869,100 |
Number of mortgages assumed during period | mortgage |  |  |  |  | 10 | 10
Realty Income, L.P. |  |  |  |  |  |
Non-cash activities: |  |  |  |  |  |
Issuance of common partnership units of Realty Income, L.P. |  |  | $ 0 | $ 51,221 | $ 38,783 |
Number of partnership units issued (in units) | shares | 240,586 | 300,604 |  | 734,458 |  |
Partnership units, properties acquired | property |  |  |  | 9 |  |
Contributions by noncontrolling interests | $ 16,600 | $ 20,400 |  |  |  |
Realty Income, L.P. | VEREIT Inc |  |  |  |  |  |
Non-cash activities: |  |  |  |  |  |
Number of partnership units issued (in units) | shares |  | 56,400 |  |  |  |
Contributions by noncontrolling interests |  | $ 1,800 |  |  |  |
Derivative |  |  |  |  |  |
Non-cash activities: |  |  |  |  |  |
Net (decrease) increase in fair value of derivatives |  |  | $ (116,145) | $ 58,753 | $ 40,489 |

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