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Schedule I - Condensed Financial Information of Parent (Balance Sheet) (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Jan. 01, 2020 | Dec. 31, 2019
--- | --- | --- | --- | --- | ---
Current Assets: |  |  |  |  |
Cash and cash equivalents | $ 1,374 | $ 943 |  |  |
Restricted cash | 536 | 304 |  |  |
Assets, Current | 7,643 | 5,356 | $ 5,414 |  |
Investment in and advances to subsidiaries and affiliates | 952 | 1,080 | 835 |  |
Office Equipment: |  |  |  |  |
Cost | 26,599 | 25,552 |  |  |
Accumulated depreciation | (8,651) | (8,486) |  |  |
Property, plant and equipment, net | 23,039 | 19,906 |  |  |
Other Assets: |  |  |  |  |
Deferred income taxes | 319 | 409 |  |  |
Other assets | 2,979 | 2,188 |  | $ 1,605 | $ 1,635
Total other assets | 7,681 | 7,701 |  |  |
Assets | 38,363 | 32,963 | 34,603 |  |
Current Liabilities: |  |  |  |  |
Accounts payable | 1,730 | 1,153 |  |  |
Accrued and other liabilities | 2,151 | 1,205 |  |  |
Total current liabilities | 6,491 | 4,732 |  |  |
Long-term Liabilities: |  |  |  |  |
Other long-term liabilities | 3,168 | 3,358 |  |  |
Liabilities, Noncurrent | 26,047 | 22,407 |  |  |
Stockholders' equity: |  |  |  |  |
Common stock | 8 | 8 |  |  |
Additional paid-in capital | 6,688 | 7,106 |  |  |
Accumulated deficit | (1,635) | (1,089) |  | $ (731) | (692)
Accumulated other comprehensive loss | (1,640) | (2,220) | (2,397) |  |
Treasury stock | (1,822) | (1,845) |  |  |
Total AES Corporation stockholders’ equity | 2,437 | 2,798 |  |  |
TOTAL LIABILITIES AND EQUITY | 38,363 | 32,963 |  |  |
Preferred stock (without par value, 50,000,000 shares authorized; 1,043,050 issued and outstanding at December 31, 2022 and December 31, 2021) | 838 | 838 |  |  |
Parent Company [Member] |  |  |  |  |
Current Assets: |  |  |  |  |
Cash and cash equivalents | 24 | 40 | $ 70 |  | $ 11
Prepaid expenses and other current assets | 47 | 50 |  |  |
Assets, Current | 240 | 321 |  |  |
Investment in and advances to subsidiaries and affiliates | 7,204 | 7,159 |  |  |
Office Equipment: |  |  |  |  |
Cost | 16 | 29 |  |  |
Accumulated depreciation | (10) | (23) |  |  |
Property, plant and equipment, net | 6 | 6 |  |  |
Other Assets: |  |  |  |  |
Debt Issuance Costs, Noncurrent, Net | 8 | 6 |  |  |
Other assets | 117 | 33 |  |  |
Total other assets | 125 | 39 |  |  |
Assets | 7,575 | 7,525 |  |  |
Current Liabilities: |  |  |  |  |
Accounts payable | 33 | 17 |  |  |
Accrued and other liabilities | 319 | 340 |  |  |
Total current liabilities | 961 | 518 |  |  |
Long-term Liabilities: |  |  |  |  |
Debt | 3,894 | 3,729 |  |  |
Other long-term liabilities | 283 | 480 |  |  |
Liabilities, Noncurrent | 4,177 | 4,209 |  |  |
Stockholders' equity: |  |  |  |  |
Common stock | 8 | 8 |  |  |
Additional paid-in capital | 6,688 | 7,106 |  |  |
Accumulated deficit | (1,635) | (1,089) |  |  |
Accumulated other comprehensive loss | (1,640) | (2,220) |  |  |
Treasury stock | (1,822) | (1,845) |  |  |
Total AES Corporation stockholders’ equity | 2,437 | 2,798 |  |  |
TOTAL LIABILITIES AND EQUITY | 7,575 | 7,525 |  |  |
Accumulated Amortization, Debt Issuance Costs, Noncurrent | 9 | 7 |  |  |
Parent Company [Member] | Related Party |  |  |  |  |
Current Assets: |  |  |  |  |
Accounts and notes receivable from subsidiaries | 169 | 231 |  |  |
Current Liabilities: |  |  |  |  |
Accounts and notes payable to subsidiaries | $ 609 | $ 161 |  |  |

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