Annual report pursuant to Section 13 and 15(d)

Schedule I - Condensed Financial Information of Registrant - Condensed Balance Sheets (Details)

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Schedule I - Condensed Financial Information of Registrant - Condensed Balance Sheets (Details) - USD ($)
$ in Millions
Dec. 31, 2018
Dec. 31, 2017
Condensed Balance Sheet Statements, Captions [Line Items]    
Cash and cash equivalents $ 981 $ 722
Restricted cash 2,175 1,880
Other current assets 114 96
Property, plant and equipment, net 27,245 23,978
Debt issuance and deferred financing costs, net 72 149
Investments in affiliates 94 64
Total assets 31,987 27,906
Current liabilities 1,742 1,251
Long-term debt, net 28,179 25,336
Stockholders’ deficit (526) (1,764)
Total liabilities and equity 31,987 27,906
Parent Company [Member]    
Condensed Balance Sheet Statements, Captions [Line Items]    
Cash and cash equivalents 0 0
Restricted cash 0 0
Other current assets 1 0
Property, plant and equipment, net 14 15
Debt issuance and deferred financing costs, net 21 12
Investments in affiliates 883 (435)
Total assets 919 (408)
Current liabilities 9 8
Long-term debt, net 1,436 1,348
Stockholders’ deficit (526) (1,764)
Total liabilities and equity $ 919 $ (408)