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Acquisitions - Schedule of Net Assets Acquired (Details) - USD ($)
$ in Millions
Dec. 31, 2015
Dec. 31, 2014
Acquisitions Disclosure [Abstract]    
Cash and cash equivalents $ 16  
Restricted cash and cash equivalents 8  
Inventories 1  
Prepaid expenses 3  
Other current assets 1  
Property and equipment 1,868 $ 144
Other intangible assets 4  
Accounts payable, accrued expenses and other (25)  
Long-term debt (450) $ (64)
Net assets acquired $ 1,426