XML 72 R42.htm IDEA: XBRL DOCUMENT v2.4.0.8
Charges and Credits - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
9 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2013
Mar. 31, 2013
Other Restructuring
Mar. 31, 2013
Venezuela Bolivar Official Currency Exchange Rate to Dollar
Dec. 31, 2012
Venezuela Bolivar Official Currency Exchange Rate to Dollar
Sep. 30, 2013
Drilling Related Technology
Sep. 30, 2013
Contract Drilling
Restructuring Cost And Reserve [Line Items]            
Pre tax and after tax gain from deconsolidation of business $ 1,028          
Impairment charge, Pretax         222 142
Impairment charge, Net         203 142
Exchange rate     6.3 4.3    
Currency loss before tax   92        
Currency loss after tax   $ 92