Consolidated Condensed Balance Sheets (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Cash and cash equivalents ($38 and $39 attributable to VIEs)	$ 215	$ 284
Accounts receivable, net of allowance of $15 and $9	15	9
Restricted cash, current ($64 and $74 attributable to VIEs)	128	134
Property, plant and equipment, net ($4,007 and $4,048 attributable to VIEs)	12,623	12,724
Restricted cash, net of current portion ($27 and $24 attributable to VIEs)	28	25
Other assets ($24 and $22 attributable to VIEs)	280	320
Debt, current portion ($177 and $175 attributable to VIEs)	227	225
Debt, net of current portion ($2,191 and $2,238 attributable to VIEs)	$ 11,455	$ 11,180
Preferred Stock, Par or Stated Value Per Share
Preferred Stock, Shares Authorized
Preferred Stock, Shares Issued
Preferred Stock, Shares Outstanding
Common Stock, Par or Stated Value Per Share	$ 0.001	$ 0.001
Common Stock, Shares Authorized	1,400,000,000	1,400,000,000
Common Stock, Shares, Issued	105.15966616429208	361,677,891
Common Stock, Shares, Outstanding	105.15966616429208	360,516,091
Treasury Stock, Shares	0	1,161,800
Variable Interest Entity, Primary Beneficiary [Member]
Cash and cash equivalents ($38 and $39 attributable to VIEs)	$ 38	$ 39
Restricted cash, current ($64 and $74 attributable to VIEs)	64	74
Current assets held for sale
Property, plant and equipment, net ($4,007 and $4,048 attributable to VIEs)	4,007	4,048
Restricted cash, net of current portion ($27 and $24 attributable to VIEs)	27	24
Other assets ($24 and $22 attributable to VIEs)	24	22
Debt, current portion ($177 and $175 attributable to VIEs)	177	175
Debt, net of current portion ($2,191 and $2,238 attributable to VIEs)	$ 2,191	$ 2,238