v2.4.0.6
Fixed Assets at cost (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Property, Plant and Equipment [Line Items]    
Gross Property and Equipment $ 9,582 [1] $ 5,786 [1]
Total accumulated depreciation 2,522 [1] 1,369 [1]
Total property and equipment, net 7,060 4,417
Land and Buildings
    
Property, Plant and Equipment [Line Items]    
Gross Property and Equipment 2,966 [1] 1,437 [1]
Equipment and Internal Use Software
    
Property, Plant and Equipment [Line Items]    
Gross Property and Equipment 6,228 [1],[2] 4,106 [1],[2]
Other Corporate Assets
    
Property, Plant and Equipment [Line Items]    
Gross Property and Equipment 174 [1] 137 [1]
Construction in Progress
    
Property, Plant and Equipment [Line Items]    
Gross Property and Equipment $ 214 [1] $ 106 [1]
[1] Excludes the original cost and accumulated depreciation of fully-depreciated assets.
[2] Includes internal-use software of $866 million and $623 million at December 31, 2012 and 2011.