Quarterly report pursuant to Section 13 or 15(d)

Leases - Narrative (Details)

v3.19.2
Leases - Narrative (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2019
Jan. 01, 2019
Dec. 31, 2018
Lessee, Lease, Description [Line Items]        
Operating lease assets $ 34 $ 34    
Operating lease, liability 34 34    
Finance lease assets 40 40   $ 41
Increase in operating lease assets and liabilities 22      
Finance lease liabilities, noncurrent 58 58   $ 59
Cash paid included in operating cash flows   4    
Cash paid included in financing activities   2    
Finance lease, amortization 1 2    
Finance lease, interest expense 1 2    
Operating lease expense $ 1 $ 3    
Accounting Standards Update 2016-02        
Lessee, Lease, Description [Line Items]        
Operating lease assets     $ 12  
Operating lease, liability     $ 12