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, 2012
Dec. 31, 2011
Dec. 31, 2010
Concentration of risk      
NET SALES $ 17,334 [1] $ 18,048 [1] $ 13,226 [1]
Sales | PACCAR Inc.
     
Concentration of risk      
NET SALES $ 2,232 $ 2,144 $ 986
Percentage of consolidated net sales 13.00% 12.00% 7.00%
[1] Includes sales to nonconsolidated equity investees of $2,427 million, $2,594 million and $2,210 million for the years ended December 31, 2012, 2011 and 2010, respectively.