XML 36 R3.htm IDEA: XBRL DOCUMENT v2.4.0.6
CONSOLIDATED CONDENSED BALANCE SHEETS (Parenthetical) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2012
Dec. 31, 2011
CONSOLIDATED CONDENSED BALANCE SHEETS    
PROPERTY, PLANT AND EQUIPMENT, accumulated depreciation, depletion and amortization $ 24,743 $ 23,687