XML 111 R96.htm IDEA: XBRL DOCUMENT v3.8.0.1
Liabilities, Commitments And Contingencies (Schedule Of Estimated Potential Funding Dates For Financing Commitments) (Details) - Financing Commitment [Member] - USD ($)
$ in Millions
Dec. 31, 2017
Dec. 31, 2016
Other Commitments, Fiscal Year Maturity [Line Items]    
2016 $ 2,047  
2017 2,975  
2018 1,396  
2019 1,322  
2020 935  
Thereafter 1,546  
Total 10,221 $ 14,847
External Credit Rating, Non Investment Grade [Member]    
Other Commitments, Fiscal Year Maturity [Line Items]    
Total $ 10,221