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v3.10.0.1

Acquisitions, Discontinued Operations and Dispositions - Major Classes of Assets and Liabilities (Details) - USD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
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Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Other current assets | $ 1 | $ 116
Current assets - discontinued operations | 197 | 744
Other non-current assets | 77 | 43
Non-current assets - discontinued operations | 1,012 | 10,506
Current liabilities - discontinued operations | 72 | 846
Other non-current liabilities | 65 | 8
Non-current liabilities - discontinued operations | 635 | 6,798
Zephyr Renewables And Carlsbad Energy Holdings LLC [Member] | Discontinued Operations |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Cash and cash equivalents | 0 | 224
Restricted Cash | 4 | 229
Accounts receivable, net | 10 | 119
Other current assets | 5 | 81
Current assets - discontinued operations | 19 | 653
Property, plant and equipment, net | 590 | 7,473
Equity investments in affiliates | 0 | 856
Intangible assets, net | 9 | 1,240
Other non-current assets | 4 | 475
Non-current assets - discontinued operations | 603 | 10,044
Current portion of long term debt and capital leases | 20 | 484
Accounts payable | 27 | 169
Other current liabilities | 1 | 159
Current liabilities - discontinued operations | 48 | 812
Long-term debt and capital leases | 572 | 6,536
Other non-current liabilities | 2 | 186
Non-current liabilities - discontinued operations | 574 | 6,722
South Central Portfolio | Discontinued Operations |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Cash and cash equivalents | 89 | (3)
Accounts receivable, net | 49 | 61
Inventory | 35 | 33
Other current assets | 5 | 0
Current assets - discontinued operations | 178 | 91
Property, plant and equipment, net | 408 | 461
Other non-current assets | 1 | 1
Non-current assets - discontinued operations | 409 | 462
Accounts payable | 19 | 28
Other current liabilities | 5 | 6
Current liabilities - discontinued operations | 24 | 34
Out-of-market contracts | 50 | 66
Other non-current liabilities | 11 | 10
Non-current liabilities - discontinued operations | $ 61 | $ 76

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