XML 144 R123.htm IDEA: XBRL DOCUMENT v3.6.0.2
Benefit Obligations (Schedule of Impact of One-Percentage-Point Change in Assumed Health Care Cost Trend) (Details) - United States Postretirement Benefit Plan of US Entity [Member]
$ in Millions
12 Months Ended
Dec. 31, 2016
USD ($)
Defined Benefit Plan Disclosure [Line Items]  
Postretirement obligations, impact of 1% decrease $ 2
Postretirement obligations, impact of 1% increase 2
Service and interest cost, impact of 1% decrease 0
Service and interest cost, impact of 1% increase $ 0