XML 112 R91.htm IDEA: XBRL DOCUMENT v3.3.1.900
Benefit Plans (Termination, Settlement and Curtailment Changes for Pension Plans) (Details) - Pension [Member] - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]      
Benefit obligation $ 0   $ 1
Net loss 8   6
Termination and settlement $ 8 $ 0 $ 7