|
INVESTMENTS IN EQUITY INVESTEES (Details) (USD $)
In Millions, unless otherwise specified
|
12 Months Ended |
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
| Equity, royalty and interest income from investees: |
|
|
|
| Investments and advances to equity investees |
$ 897
|
$ 838
|
$ 734
|
| Cummins share of net income |
347
|
375
|
321
|
| Royalty and interest income |
37
|
41
|
30
|
| Equity, royalty and interest income from investees |
384
|
416
|
351
|
|
Deconsolidation of variable interest entity
|
|
|
|
| Equity, royalty and interest income from investees: |
|
|
|
| Decrease in current assets |
|
|
9
|
| Decrease in long-term assets |
|
|
10
|
| Increase in investments and advances related to equity method investees |
|
|
11
|
| Decrease in noncontrolling interest |
|
|
11
|
|
Minimum
|
|
|
|
| Equity, royalty and interest income from investees: |
|
|
|
| Ownership percentage |
20.00%
|
|
|
|
Maximum
|
|
|
|
| Equity, royalty and interest income from investees: |
|
|
|
| Ownership percentage |
50.00%
|
|
|
|
Distribution - North American distributors
|
|
|
|
| Equity, royalty and interest income from investees: |
|
|
|
| Investments and advances to equity investees |
139
|
127
|
|
| Cummins share of net income |
147
|
134
|
101
|
| Number of partially-owned distributors |
11
|
|
|
| Minimum ownership percentage in partially-owned distributors that are consolidated |
50.00%
|
|
|
| Number of partially-owned distributors, consolidated |
4
|
|
|
|
Distribution - North American distributors | Minimum
|
|
|
|
| Equity, royalty and interest income from investees: |
|
|
|
| Ownership percentage |
30.00%
|
|
|
|
Distribution - North American distributors | Maximum
|
|
|
|
| Equity, royalty and interest income from investees: |
|
|
|
| Ownership percentage |
50.00%
|
|
|
|
Distribution - International distributors
|
|
|
|
| Equity, royalty and interest income from investees: |
|
|
|
| Ownership percentage |
50.00%
|
|
|
| Number of partially-owned distributors |
6
|
|
|
|
Distribution - Komatsu Cummins Chile, Ltda.
|
|
|
|
| Equity, royalty and interest income from investees: |
|
|
|
| Cummins share of net income |
26
|
22
|
16
|
|
Distribution - All other distributors
|
|
|
|
| Equity, royalty and interest income from investees: |
|
|
|
| Cummins share of net income |
4
|
4
|
3
|
|
Komatsu alliances
|
|
|
|
| Equity, royalty and interest income from investees: |
|
|
|
| Investments and advances to equity investees |
132
|
115
|
|
|
Komatsu alliances | Minimum
|
|
|
|
| Equity, royalty and interest income from investees: |
|
|
|
| Ownership percentage |
20.00%
|
|
|
|
Komatsu alliances | Maximum
|
|
|
|
| Equity, royalty and interest income from investees: |
|
|
|
| Ownership percentage |
50.00%
|
|
|
|
Manufacturing Entities | Minimum
|
|
|
|
| Equity, royalty and interest income from investees: |
|
|
|
| Ownership percentage of joint venture included in Consolidated Financial Statements |
50.00%
|
|
|
|
Manufacturing - Dongfeng Cummins Engine Company, Ltd.
|
|
|
|
| Equity, royalty and interest income from investees: |
|
|
|
| Ownership percentage |
50.00%
|
|
|
| Investments and advances to equity investees |
113
|
131
|
|
| Cummins share of net income |
52
|
80
|
99
|
|
Manufacturing - Dongfeng Cummins Engine Company, Ltd. | Minimum
|
|
|
|
| Other disclosure |
|
|
|
| Capacity of mechanical engines (in liters) |
4
|
|
|
| Power of mechanical engines (in horsepower) |
125
|
|
|
|
Manufacturing - Dongfeng Cummins Engine Company, Ltd. | Maximum
|
|
|
|
| Other disclosure |
|
|
|
| Capacity of mechanical engines (in liters) |
13
|
|
|
| Power of mechanical engines (in horsepower) |
545
|
|
|
|
Manufacturing - Chongqing Cummins Engine Company, Ltd.
|
|
|
|
| Equity, royalty and interest income from investees: |
|
|
|
| Ownership percentage |
50.00%
|
|
|
| Investments and advances to equity investees |
58
|
71
|
|
| Cummins share of net income |
61
|
68
|
46
|
|
Manufacturing - Shanghai Fleetguard Filter Co., Ltd.
|
|
|
|
| Equity, royalty and interest income from investees: |
|
|
|
| Ownership percentage |
50.00%
|
|
|
| Investments and advances to equity investees |
31
|
29
|
|
| Cummins share of net income |
13
|
15
|
12
|
|
Manufacturing - Tata Cummins, Ltd.
|
|
|
|
| Equity, royalty and interest income from investees: |
|
|
|
| Ownership percentage |
50.00%
|
|
|
| Investments and advances to equity investees |
52
|
49
|
|
| Cummins share of net income |
11
|
14
|
14
|
|
Manufacturing - Cummins Westport, Inc.
|
|
|
|
| Equity, royalty and interest income from investees: |
|
|
|
| Cummins share of net income |
14
|
14
|
10
|
|
Manufacturing - Valvoline Cummins, Ltd.
|
|
|
|
| Equity, royalty and interest income from investees: |
|
|
|
| Ownership percentage |
50.00%
|
|
|
| Investments and advances to equity investees |
25
|
20
|
|
| Cummins share of net income |
8
|
7
|
8
|
|
Manufacturing - Komatsu manufacturing alliances
|
|
|
|
| Equity, royalty and interest income from investees: |
|
|
|
| Cummins share of net income |
(3)
|
3
|
11
|
| Number of manufacturing joint ventures |
2
|
|
|
| Number of design joint ventures |
1
|
|
|
|
Manufacturing - Cummins MerCruiser Diesel Marine, LLC
|
|
|
|
| Equity, royalty and interest income from investees: |
|
|
|
| Number of companies transitioning to a strategic supply arrangement |
2
|
|
|
|
Manufacturing - Beijing Foton Cummins Engine Co., Ltd.
|
|
|
|
| Equity, royalty and interest income from investees: |
|
|
|
| Ownership percentage |
50.00%
|
|
|
| Investments and advances to equity investees |
91
|
87
|
|
| Cummins share of net income |
5
|
(7)
|
(16)
|
|
Manufacturing - Beijing Foton Cummins Engine Co., Ltd. | Minimum
|
|
|
|
| Other disclosure |
|
|
|
| Capacity of mechanical engines (in liters) |
2.8
|
|
|
|
Manufacturing - Beijing Foton Cummins Engine Co., Ltd. | Maximum
|
|
|
|
| Other disclosure |
|
|
|
| Capacity of mechanical engines (in liters) |
3.8
|
|
|
|
Manufacturing - Cummins-Scania XPI Manufacturing, LLC
|
|
|
|
| Equity, royalty and interest income from investees: |
|
|
|
| Ownership percentage |
50.00%
|
|
|
| Investments and advances to equity investees |
65
|
62
|
|
|
Manufacturing - Cummins Olayan Energy Limited Guarantee
|
|
|
|
| Equity, royalty and interest income from investees: |
|
|
|
| Ownership percentage |
49.00%
|
|
|
| Investments and advances to equity investees |
34
|
30
|
|
|
Manufacturing - Guangxi Cummins Industrial Power Co., Ltd.
|
|
|
|
| Equity, royalty and interest income from investees: |
|
|
|
| Ownership percentage |
50.00%
|
|
|
| Investments and advances to equity investees |
30
|
|
|
|
Manufacturing - Guangxi Cummins Industrial Power Co., Ltd. | Minimum
|
|
|
|
| Other disclosure |
|
|
|
| Capacity of mechanical engines (in liters) |
6.7
|
|
|
|
Manufacturing - Guangxi Cummins Industrial Power Co., Ltd. | Maximum
|
|
|
|
| Other disclosure |
|
|
|
| Capacity of mechanical engines (in liters) |
9.3
|
|
|
|
Manufacturing - Fleetguard Filters Private, Ltd.
|
|
|
|
| Equity, royalty and interest income from investees: |
|
|
|
| Ownership percentage |
50.00%
|
|
|
| Investments and advances to equity investees |
23
|
22
|
|
|
Manufacturing - All other manufacturers
|
|
|
|
| Equity, royalty and interest income from investees: |
|
|
|
| Cummins share of net income |
9
|
21
|
17
|
|
Other Distributors and Manufacturers
|
|
|
|
| Equity, royalty and interest income from investees: |
|
|
|
| Investments and advances to equity investees |
$ 104
|
$ 95
|
|