Quarterly report pursuant to Section 13 or 15(d)

EQUITY, ROYALTY AND INTEREST INCOME FROM INVESTEES (Details)

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EQUITY, ROYALTY AND INTEREST INCOME FROM INVESTEES (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Apr. 01, 2012
Equity, royalty and interest income from investees    
Cummins share of net income $ 73 $ 92
Royalty and interest income 9 12
Equity, royalty and interest income from investees 82 104
Distribution - North American distributors
   
Equity, royalty and interest income from investees    
Cummins share of net income 35 40
Distribution - Komatsu Cummins Chile, Ltda.
   
Equity, royalty and interest income from investees    
Cummins share of net income 5 5
Distribution - All other distributors
   
Equity, royalty and interest income from investees    
Cummins share of net income   1
Manufacturing - Chongqing Cummins Engine Company, Ltd.
   
Equity, royalty and interest income from investees    
Cummins share of net income 12 18
Manufacturing - Dongfeng Cummins Engine Company, Ltd.
   
Equity, royalty and interest income from investees    
Cummins share of net income 12 16
Manufacturing - Shanghai Fleetguard Filter Co., Ltd.
   
Equity, royalty and interest income from investees    
Cummins share of net income 3 3
Manufacturing - Valvoline Cummins, Ltd.
   
Equity, royalty and interest income from investees    
Cummins share of net income 3 2
Manufacturing - Tata Cummins, Ltd.
   
Equity, royalty and interest income from investees    
Cummins share of net income 1 4
Manufacturing - Beijing Foton Cummins Engine Co., Ltd.
   
Equity, royalty and interest income from investees    
Cummins share of net income 1 (2)
Manufacturing - Cummins Westport, Inc.
   
Equity, royalty and interest income from investees    
Cummins share of net income   5
Manufacturing - Komatsu manufacturing alliances
   
Equity, royalty and interest income from investees    
Cummins share of net income (1) (1)
Manufacturing - All other manufacturers
   
Equity, royalty and interest income from investees    
Cummins share of net income $ 2 $ 1