XML 82 R59.htm IDEA: XBRL DOCUMENT v3.8.0.1
Financial Instruments - Information on Derivative Positions Subject to Master Netting Arrangements as if they were Presented on a Net Basis (Details) - USD ($)
$ in Millions
Dec. 31, 2017
Dec. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]    
Gross amounts recognized in the consolidated balance sheet, Asset $ 130 $ 995
Gross amount subject to offset in master netting arrangements not offset in the consolidated balance sheet, Asset (94) (131)
Cash collateral (received) posted, Asset (3) (529)
Net amounts, Asset 33 335
Gross amounts recognized in the consolidated balance sheet, Liability 217 134
Gross amount subject to offset in master netting arrangements not offset in the consolidated balance sheet, Liability (94) (131)
Cash collateral (received) posted, Liability 0 0
Net amounts, Liability $ 123 $ 3