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Schedule I - Condensed Financial Information of Parent (Balance Sheet) (Details) - USD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016 | Jan. 01, 2016 | Dec. 31, 2015 | Jan. 01, 2015 | Dec. 31, 2014
--- | --- | --- | --- | --- | --- | ---
Current Assets: |  |  |  |  |  |
Cash and cash equivalents | $ 949 | $ 1,244 | $ 1,218 | $ 1,218 | $ 1,449 |
Restricted cash | 274 | 277 |  |  |  |
Total current assets | 6,398 | 6,416 |  |  |  |
Investment in and advances to subsidiaries and affiliates | 1,197 | 621 |  | 610 |  |
Office Equipment: |  |  |  |  |  |
Cost | 24,119 | 24,911 |  |  |  |
Accumulated depreciation | (7,942) | (7,919) |  |  |  |
Property, plant and equipment, net | 20,296 | 20,415 |  |  |  |
Other Assets: |  |  |  |  |  |
Deferred income taxes | 130 | 227 |  |  |  |
Other assets | 1,741 | 1,775 |  |  |  |
Total other assets | 6,418 | 9,293 |  |  |  |
TOTAL ASSETS | 33,112 | 36,124 |  | 36,545 |  |
Current Liabilities: |  |  |  |  |  |
Accounts payable | 1,371 | 1,238 |  |  |  |
Accrued and other liabilities | 1,232 | 1,117 |  |  |  |
Total current liabilities | 6,028 | 5,277 |  |  |  |
Long-term Liabilities: |  |  |  |  |  |
Other long-term liabilities | 2,365 | 2,327 |  |  |  |
Total noncurrent liabilities | 21,402 | 24,365 |  |  |  |
Stockholders' equity: |  |  |  |  |  |
Common stock | 8 | 8 |  |  |  |
Additional paid-in capital | 8,501 | 8,592 |  |  |  |
Accumulated deficit | (2,276) | (1,146) |  |  |  |
Accumulated other comprehensive loss | (1,876) | (2,756) |  | (3,883) |  |
Treasury stock | (1,892) | (1,904) |  |  |  |
Total AES Corporation stockholders’ equity | 2,465 | 2,794 |  |  |  |
TOTAL LIABILITIES AND EQUITY | 33,112 | 36,124 |  |  |  |
Parent Company [Member] |  |  |  |  |  |
Current Assets: |  |  |  |  |  |
Cash and cash equivalents | 10 | 109 |  | $ 186 |  | $ 511
Restricted cash | 0 | 3 |  |  |  |
Accounts and notes receivable from subsidiaries | 143 | 155 |  |  |  |
Prepaid expenses and other current assets | 27 | 39 |  |  |  |
Total current assets | 180 | 306 |  |  |  |
Investment in and advances to subsidiaries and affiliates | 8,239 | 7,561 |  |  |  |
Office Equipment: |  |  |  |  |  |
Cost | 27 | 26 |  |  |  |
Accumulated depreciation | (18) | (16) |  |  |  |
Property, plant and equipment, net | 9 | 10 |  |  |  |
Other Intangible Assets, Net | 3 | 5 |  |  |  |
Other Assets: |  |  |  |  |  |
Deferred financing costs, net of accumulated amortization of $2 | 5 | 5 |  |  |  |
Deferred income taxes | 289 | 1,041 |  |  |  |
Other assets | 2 | 13 |  |  |  |
Total other assets | 299 | 1,064 |  |  |  |
TOTAL ASSETS | 8,727 | 8,941 |  |  |  |
Current Liabilities: |  |  |  |  |  |
Accounts payable | 18 | 18 |  |  |  |
Accounts and notes payable to subsidiaries | 381 | 304 |  |  |  |
Accrued and other liabilities | 246 | 250 |  |  |  |
Senior notes payable—current portion | 5 | 0 |  |  |  |
Total current liabilities | 650 | 572 |  |  |  |
Long-term Liabilities: |  |  |  |  |  |
Senior notes payable | 4,625 | 4,154 |  |  |  |
Junior subordinated notes and debentures payable | 0 | 517 |  |  |  |
Accounts and notes payable to subsidiaries | 967 | 883 |  |  |  |
Other long-term liabilities | 20 | 21 |  |  |  |
Total noncurrent liabilities | 5,612 | 5,575 |  |  |  |
Stockholders' equity: |  |  |  |  |  |
Common stock | 8 | 8 |  |  |  |
Additional paid-in capital | 8,501 | 8,592 |  |  |  |
Accumulated deficit | (2,276) | (1,146) |  |  |  |
Accumulated other comprehensive loss | (1,876) | (2,756) |  |  |  |
Treasury stock | (1,892) | (1,904) |  |  |  |
Total AES Corporation stockholders’ equity | 2,465 | 2,794 |  |  |  |
TOTAL LIABILITIES AND EQUITY | $ 8,727 | $ 8,941 |  |  |  |

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