v3.7.0.1
Basis of Presentation and Principles Of Consolidation - Narrative (Details) - USD ($)
$ in Millions
Mar. 31, 2017
Dec. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Decrease in retained earnings from adoption of new accounting principle $ (19)  
New Accounting Pronouncement, Early Adoption, Effect | Long-term Debt, Current Maturities    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Deferred finance costs  
New Accounting Pronouncement, Early Adoption, Effect | Long-term Debt, Excluding Current Maturities    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Deferred finance costs