XML 34 R87.htm IDEA: XBRL DOCUMENT v2.4.0.8
Pension and Other Postretirement Benefit Plans (Effect of Significant Unobservable Inputs (Level 3)) (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2013
Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]      
Fair Value of Plan Assets, beginning of year $ 3,041 $ 2,987 $ 196
Realized gains (net)     16
Unrealized gains (net)     10
Purchases     14
Settlements     38
Fair Value of Plan Assets, end of year $ 3,041 $ 2,987 $ 198