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Organization, Description Of Business And Basis of Presentation (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2012
RSC [Member]
Apr. 30, 2012
RSC [Member]
Locations
Apr. 30, 2012
United States [Member]
RSC [Member]
Locations
Apr. 30, 2012
Canadian provinces [Member]
RSC [Member]
Locations
Business Acquisition [Line Items]            
Percentage of equity interest acquired       100.00%    
Number of rental locations (in locations)       440 43 3
Revenues $ 1,100 $ 656        
Pro forma revenues     $ 1,064