v3.20.2
Income Taxes​ (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Income Tax Disclosure [Abstract]        
Effective income tax rate, before discrete items     60.20% 40.50%
Effective income tax rate, including discrete items 25.20% 61.50%    
Income Tax Expense (Benefit)        
Pretax income at estimated annual effective income tax rate before discrete items $ (74) $ 5 $ (19) $ 32
Impact of change in estimated annual effective tax rate on previous quarter’s pretax income 29 3 0 0
Interim period treatment of operational losses in foreign jurisdictions for which no tax benefit is recognized* 14 1 15 0
Other discrete items 0 (1) 4 1
(Benefit) Provision for income taxes $ (31) $ 8 $ 0 $ 33