XML 79 R67.htm IDEA: XBRL DOCUMENT v3.10.0.1
Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2018
Dec. 31, 2017
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Income Tax Disclosure [Abstract]          
Effective income tax rate 165.50%   76.90% (4.80%) (181.00%)
Income tax expense (benefit) $ 144   $ 143 $ 30 $ 143
Income (loss) from continuing operations before income taxes 87   $ 186 $ (631) $ (79)
Provisional income tax expense   $ 345      
Reduction in provisional expense $ 11        
Effect of change in enacted tax rate (percentage) 12.60%     (1.70%)