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SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF PARENT - BALANCE SHEETS (Details) - USD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | --- | --- | ---
ASSETS |  |  |  |
Cash and cash equivalents | $ 190 | $ 288 |  |
Due from affiliates | 39 | 37 |  |
Income taxes receivable | 68 | 110 |  |
Other current assets | 257 | 202 |  |
Total current assets | 3,645 | 3,341 |  |
Due from affiliates | 688 | 598 |  |
Deferred income taxes | 151 | 170 |  |
Other assets | 974 | 792 |  |
Total assets | 60,638 | 50,454 | $ 47,786 |
Liabilities and shareholders’ equity: |  |  |  |
Current portion of long-term debt | 1,673 | 1,427 |  |
Due to affiliates | 10 | 7 |  |
Other current liabilities | 970 | 816 |  |
Total current liabilities | 7,523 | 6,635 |  |
Long-term debt | 21,611 | 16,445 |  |
Due to affiliates | 37 | 35 |  |
Commitments and contingencies (Note 4) |  |  |  |
Total shareholders’ equity | 17,138 | 12,670 |  |
Total liabilities and equity | 60,638 | 50,454 |  |
Parent Company [Member] |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 14 | 104 | $ 12 | $ 4
Due from affiliates | 93 | 83 |  |
Income taxes receivable | 397 | 272 |  |
Other current assets | 9 | 6 |  |
Total current assets | 513 | 465 |  |
Investments in subsidiaries | 28,778 | 17,924 |  |
Due from affiliates | 3 | 2 |  |
Deferred income taxes | 1,554 | 1,802 |  |
Other assets | 572 | 656 |  |
Total assets | 31,420 | 20,849 |  |
Liabilities and shareholders’ equity: |  |  |  |
Current portion of long-term debt | 1,498 | 500 |  |
Due to affiliates | 287 | 280 |  |
Other current liabilities | 527 | 396 |  |
Total current liabilities | 2,312 | 1,176 |  |
Long-term debt | 9,647 | 6,198 |  |
Due to affiliates | 1,812 | 300 |  |
Other long-term liabilities | 511 | 505 |  |
Commitments and contingencies (Note 4) |  |  |  |
Total shareholders’ equity | 17,138 | 12,670 |  |
Total liabilities and equity | $ 31,420 | $ 20,849 |  |

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