Annual report pursuant to Section 13 and 15(d)

OTHER COMPREHENSIVE INCOME (LOSS) (Details)

v2.4.0.6
OTHER COMPREHENSIVE INCOME (LOSS) (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Other Comprehensive Income (Loss), Before Tax      
Change in pensions and other postretirement defined benefit plans, before tax $ (103) $ (107) $ 207
Foreign currency translation adjustments, before tax amount 25 (120) 52
Unrealized gain (loss) on marketable securities:      
Holding gain (loss), before tax (2) (3) 2
Reclassification of realized gain (loss) to net income, before tax 3 3  
Net unrealized gain (loss), before tax 1   2
Unrealized gain (loss) on derivatives:      
Holding gain (loss), before tax 16 (26) 8
Reclassification of realized gain (loss) to net income, before tax 14 (22) (2)
Net unrealized gain (loss), before tax 30 (48) 6
Other comprehensive income (loss) attributable to Cummins Inc., before tax (47) (275) 267
Noncontrolling Interests, before tax (7) (38) 12
Total other comprehensive income (loss), before tax (54) (313) 279
Other Comprehensive Income (Loss), Tax (Provision) Benefit      
Change in pensions and other postretirement defined benefit plans, tax (provision) benefit 33 29 (65)
Foreign currency translation adjustments, tax (provision) benefit 12 12 (25)
Unrealized gain (loss) on marketable securities:      
Holding gain (loss), tax (provision) benefit 1 1  
Reclassification of realized gain (loss) to net income, tax (provision) benefit (1) (1)  
Unrealized gain (loss) on derivatives:      
Holding gain (loss), tax (provision) benefit (5) 11 (3)
Reclassification of realized gain (loss) to net income, tax (provision) benefit (5) 5 1
Net unrealized gain (loss), tax (provision) benefit (10) 16 (2)
Other comprehensive income (loss) attributable to Cummins Inc., tax (provision) benefit 35 57 (92)
Total other comprehensive income (loss), tax (provision) benefit 35 57 (92)
Other comprehensive income (loss), net of tax      
Change in pensions and other postretirement defined benefit plans, net of tax (70) (78) 142
Foreign currency translation adjustments 37 (108) 27
Unrealized gain (loss) on marketable securities:      
Holding gain (loss), net of tax (1) (2) 2
Reclassification of realized gain (loss) to net income, net of tax 2 2  
Net unrealized gain (loss), net of tax 1   2
Unrealized gain (loss) on derivatives:      
Holding gain (loss), net of tax 11 (15) 5
Reclassification of realized gain (loss) to net income, net of tax 9 (17) (1)
Net unrealized gain (loss), net of tax 20 (32) 4
Other comprehensive income (loss) (12) (218) 175
Noncontrolling Interests, net of tax (7) (38) 12
Total other comprehensive income (loss), net of tax $ (19) $ (256) $ 187