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Capital Accounts (Tables) | 9 Months Ended
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Sep. 30, 2021
Capital Accounts [Abstract] |
Summary of Changes in Outstanding Units | The following table summarizes changes in the number of our common units outstanding since December 31, 2020:
Common units outstanding at December 31, 2020 |  |  | 2,182,308,958 |
Common unit repurchases under 2019 Buyback Program |  |  | (709,816 | )
Common units issued in connection with the vesting of phantom unit awards, net |  |  | 3,553,313 |
Other |  |  | 26,148 |
Common units outstanding at March 31, 2021 |  |  | 2,185,178,603 |
Common units issued in connection with the vesting of phantom unit awards, net |  |  | 203,066 |
Common units outstanding at June 30, 2021 |  |  | 2,185,381,669 |
Common unit repurchases under 2019 Buyback Program |  |  | (3,367,377 | )
Common units issued in connection with the vesting of phantom unit awards, net |  |  | 115,665 |
Common units outstanding at September 30, 2021 |  |  | 2,182,129,957 |
The following table summarizes changes in the number of our Series A Cumulative Convertible Preferred Units (“preferred units”) outstanding since December 31, 2020:
Preferred units outstanding at December 31, 2020 |  |  | 50,138 |
Paid in-kind distribution to related party |  |  | 274 |
Preferred units outstanding at March 31, 2021, June 30, 2021 and September 30, 2021 |  |  | 50,412 |
Components of Accumulated Other Comprehensive Income (Loss) | The following tables present the components of accumulated other comprehensive income (loss) as reported on our Unaudited Condensed Consolidated Balance Sheets at the dates indicated:
|  | Cash Flow Hedges |  |  |  |  |  |  |
|  | Commodity Derivative Instruments |  |  | Interest Rate Derivative Instruments |  |  | Other |  |  | Total |
Accumulated Other Comprehensive Income (Loss), December 31, 2020 |  | $ | (93.2 | ) |  | $ | (74.3 | ) |  | $ | 2.3 |  |  | $ | (165.2 | )
Other comprehensive income (loss) for period, before reclassifications |  |  | (852.2 | ) |  |  | 182.9 |  |  |  | (0.3 | ) |  |  | (669.6 | )
Reclassification of losses to net income during period |  |  | 633.8 |  |  |  | 29.1 |  |  |  | 0.1 |  |  |  | 663.0 |
Total other comprehensive income (loss) for period |  |  | (218.4 | ) |  |  | 212.0 |  |  |  | (0.2 | ) |  |  | (6.6 | )
Accumulated Other Comprehensive Income (Loss), September 30, 2021 |  | $ | (311.6 | ) |  | $ | 137.7 |  |  | $ | 2.1 |  |  | $ | (171.8 | )
|  | Cash Flow Hedges |  |  |  |  |  |  |
|  | Commodity Derivative Instruments |  |  | Interest Rate Derivative Instruments |  |  | Other |  |  | Total |
Accumulated Other Comprehensive Income, December 31, 2019 |  | $ | 55.1 |  |  | $ | 13.9 |  |  | $ | 2.4 |  |  | $ | 71.4 |
Other comprehensive income (loss) for period, before reclassifications |  |  | 392.7 |  |  |  | (207.7 | ) |  |  | (0.1 | ) |  |  | 184.9 |
Reclassification of losses (gains) to net income during period |  |  | (334.8 | ) |  |  | 29.2 |  |  |  | – |  |  |  | (305.6 | )
Total other comprehensive income (loss) for period |  |  | 57.9 |  |  |  | (178.5 | ) |  |  | (0.1 | ) |  |  | (120.7 | )
Accumulated Other Comprehensive Income (Loss), September 30, 2020 |  | $ | 113.0 |  |  | $ | (164.6 | ) |  | $ | 2.3 |  |  | $ | (49.3 | )
Reclassification out of Accumulated Other Comprehensive Income (Loss) | The following table presents reclassifications of (income) loss out of accumulated other comprehensive income into net income during the periods indicated:
|  |  | For the Three Months Ended September 30, |  |  | For the Nine Months Ended September 30, |
Losses (gains) on cash flow hedges: | Location |  | 2021 |  |  | 2020 |  |  | 2021 |  |  | 2020 |
Interest rate derivatives | Interest expense |  | $ | 10.3 |  |  | $ | 9.9 |  |  | $ | 29.1 |  |  | $ | 29.2 |
Commodity derivatives | Revenue |  |  | 116.8 |  |  |  | 19.5 |  |  |  | 614.9 |  |  |  | (344.7 | )
Commodity derivatives | Operating costs and expenses |  |  | 0.3 |  |  |  | 10.0 |  |  |  | 18.9 |  |  |  | 9.9 |
Total |  |  | $ | 127.4 |  |  | $ | 39.4 |  |  | $ | 662.9 |  |  | $ | (305.6 | )

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