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Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Income Tax Disclosure [Abstract]        
Income tax expense (benefit) $ 62 $ (10) $ (24) $ (2)
U.S. income tax rate     21.00%  
Tax Cuts and Jobs Act of 2017, Income tax expense (benefit)     $ (124)  
Loss with no tax benefit, valuation allowance 46   96  
Loss with no tax benefit, jurisdiction $ 10   $ 17  
General Electric Oil & Gas | U.S. and Foreign Authorities        
Investments, Owned, Federal Income Tax Note [Line Items]        
Business combination, earnings attributable to tax, before tax, percent       100.00%