Quarterly report pursuant to Section 13 or 15(d)

Financial Instruments and Fair Value Measurements (Details)

v3.10.0.1
Financial Instruments and Fair Value Measurements (Details) - USD ($)
$ in Millions
Jun. 30, 2018
Dec. 31, 2017
Jun. 15, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Derivative notional amount     $ 125
Current Assets      
Derivative Asset, Current $ 2    
Recurring      
Current Assets      
Cash equivalents 234 $ 42  
Derivative Asset, Noncurrent   2  
Derivative Asset, Current 2    
Long-term liabilities      
Long-term Debt, Fair Value 4,814 5,132  
Recurring | Level 1      
Current Assets      
Cash equivalents 234 42  
Recurring | Level 2      
Current Assets      
Derivative Asset, Noncurrent   2  
Derivative Asset, Current 2    
Long-term liabilities      
Long-term Debt, Fair Value $ 4,814 $ 5,132