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CONSOLIDATED STATEMENTS OF OPERATIONS OF ERP OPERATING LIMITED PARTNERSHIP - USD ($) shares in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
REVENUES |  |  |
Rental income | $ 2,735,180 | $ 2,463,997 | $ 2,571,705
EXPENSES |  |  |
Property and maintenance | 483,865 | 453,532 | 440,998
Real estate taxes and insurance | 388,412 | 397,105 | 381,562
Property management | 110,304 | 98,155 | 93,825
General and administrative | 58,710 | 56,506 | 48,305
Depreciation | 882,168 | 838,272 | 820,832
Total expenses | 1,923,459 | 1,843,570 | 1,785,522
Net gain (loss) on sales of real estate properties | 304,325 | 1,072,183 | 531,807
Impairment |  | (16,769) |
Operating income | 1,116,046 | 1,675,841 | 1,317,990
Interest and other income | 2,193 | 25,666 | 5,935
Other expenses | (13,664) | (19,275) | (17,510)
Interest: |  |  |
Expense incurred, net | (282,920) | (272,473) | (365,073)
Amortization of deferred financing costs | (8,729) | (8,737) | (8,939)
Income before income and other taxes, income (loss) from investments in unconsolidated entities and net gain (loss) on sales of land parcels | 812,926 | 1,401,022 | 932,403
Income and other tax (expense) benefit | (900) | (915) | (852)
Income (loss) from investments in unconsolidated entities | (5,031) | (3,398) | (3,284)
Net gain (loss) on sales of land parcels |  | 5 | 34,234
Net income | 806,995 | 1,396,714 | 962,501
Net (income) loss attributable to Noncontrolling Interests - Partially Owned Properties | (3,774) | (17,964) | (14,855)
Net income attributable to controlling interests | $ 776,911 | $ 1,332,850 | $ 913,636
Earnings per Unit – basic: |  |  |
Net income available to Units | $ 2.06 | $ 3.56 | $ 2.45
Earnings per Unit – diluted: |  |  |
Net income available to Units | $ 2.05 | $ 3.54 | $ 2.45
Weighted average Units outstanding | 389,450 | 388,089 | 385,874
ERPOP [Member] |  |  |
REVENUES |  |  |
Rental income | $ 2,735,180 | $ 2,463,997 | $ 2,571,705
EXPENSES |  |  |
Property and maintenance | 483,865 | 453,532 | 440,998
Real estate taxes and insurance | 388,412 | 397,105 | 381,562
Property management | 110,304 | 98,155 | 93,825
General and administrative | 58,710 | 56,506 | 48,305
Depreciation | 882,168 | 838,272 | 820,832
Total expenses | 1,923,459 | 1,843,570 | 1,785,522
Net gain (loss) on sales of real estate properties | 304,325 | 1,072,183 | 531,807
Impairment |  | (16,769) |
Operating income | 1,116,046 | 1,675,841 | 1,317,990
Interest and other income | 2,193 | 25,666 | 5,935
Other expenses | (13,664) | (19,275) | (17,510)
Interest: |  |  |
Expense incurred, net | (282,920) | (272,473) | (365,073)
Amortization of deferred financing costs | (8,729) | (8,737) | (8,939)
Income before income and other taxes, income (loss) from investments in unconsolidated entities and net gain (loss) on sales of land parcels | 812,926 | 1,401,022 | 932,403
Income and other tax (expense) benefit | (900) | (915) | (852)
Income (loss) from investments in unconsolidated entities | (5,031) | (3,398) | (3,284)
Net gain (loss) on sales of land parcels |  | 5 | 34,234
Net income | 806,995 | 1,396,714 | 962,501
Net (income) loss attributable to Noncontrolling Interests - Partially Owned Properties | (3,774) | (17,964) | (14,855)
Net income attributable to controlling interests | 803,221 | 1,378,750 | 947,646
ALLOCATION OF NET INCOME: |  |  |
Preference Units | 3,090 | 3,090 | 3,090
General Partner | 773,821 | 1,329,760 | 910,546
Limited Partners | 26,310 | 45,900 | 34,010
Net income available to Units | $ 800,131 | $ 1,375,660 | $ 944,556
Earnings per Unit – basic: |  |  |
Net income available to Units | $ 2.06 | $ 3.56 | $ 2.45
Weighted average Units outstanding | 388,045 | 386,096 | 384,794
Earnings per Unit – diluted: |  |  |
Net income available to Units | $ 2.05 | $ 3.54 | $ 2.45
Weighted average Units outstanding | 389,450 | 388,089 | 385,874

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