Annual report pursuant to Section 13 and 15(d)

OPERATING SEGMENTS (Details 3)

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OPERATING SEGMENTS (Details 3) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Concentration of risk      
NET SALES $ 18,048 [1] $ 13,226 [1] $ 10,800 [1]
PACCAR Inc.
     
Concentration of risk      
NET SALES $ 2,144 $ 986 $ 925
Sales
     
Concentration of risk      
Percentage required for qualification as major customer (as a percent) 10.00%    
Sales | PACCAR Inc.
     
Concentration of risk      
Percentage of consolidated net sales 12.00% 7.00% 9.00%
[1] Includes sales to nonconsolidated equity investees of $2,594 million, $2,210 million and $1,830 million for the years ended December 31, 2011, 2010 and 2009, respectively.