The number of group presidents that comprise the reporting entity's executive office.

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Represents the number of operating segments that are led by the group president who is responsible for corporate services.

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Represents the number of operating segments which are led by group presidents.

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Represents the number of smaller operating segments that are led by the group president.

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Amount of total capital expenditures attributable to the reportable segments.

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Represents the useful life used to amortize goodwill to allocate to segments assets.

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(12))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 210
-Section S99
-Paragraph 1
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The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
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Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h)(1)(i))
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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Segment information (Details) $ in Millions	3 Months Ended								12 Months Ended
Segment information (Details) $ in Millions	Dec. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2017 USD ($) group_presidents segments	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Segment Reporting Information
Number of group presidents \| group_presidents									5
Number of operating segments \| segments									6
Useful life to amortize goodwill for segment assets									20 years
Reportable Segments
Sales and revenues	$ 12,896	$ 11,413	$ 11,331	$ 9,822	$ 9,574	$ 9,160	$ 10,342	$ 9,461	$ 45,462	$ 38,537	$ 47,011
Depreciation and amortization									2,877	3,034	3,046
Consolidated profit before taxes									4,082	139	3,439
Segment assets	76,962				74,704				76,962	74,704	78,342
Capital expenditures									$ 2,336	2,928	3,261
All Other operating segments
Segment Reporting Information
Number of group presidents \| group_presidents									1
Number of smaller operating segments led by Group President \| segments									2
Reportable Segments
Sales and revenues									$ 178	139	203
Depreciation and amortization									220	219	205
Consolidated profit before taxes									(43)	(77)	(75)
Segment assets	1,312				1,381				1,312	1,381	1,405
Capital expenditures									134	182	169
Reportable Segments Including Intersegment Eliminations
Reportable Segments
Sales and revenues									$ 49,576	41,644	50,451
Reportable segments
Segment Reporting Information
Number of operating segments led by Group Presidents \| segments									3
Number of operating segments led by Group president responsible for corporate services \| segments									1
Number of reportable segments \| segments									4
Reportable Segments
Sales and revenues									$ 45,694	38,742	47,133
Depreciation and amortization									2,387	2,591	2,686
Consolidated profit before taxes									7,623	3,527	6,065
Segment assets	53,698				55,517				53,698	55,517	59,605
Capital expenditures									2,311	2,586	2,913
Intersegment Eliminations
Reportable Segments
Sales and revenues									3,882	2,902	3,318
Machinery, Energy & Transportation \| Reportable Segments Including Intersegment Eliminations
Reportable Segments
Sales and revenues									46,483	38,651	47,373
Machinery, Energy & Transportation \| Reportable segments
Reportable Segments
Sales and revenues									42,601	35,749	44,055
Depreciation and amortization									1,567	1,742	1,838
Consolidated profit before taxes									6,831	2,825	5,256
Segment assets	18,805				20,293				18,805	20,293	23,876
Capital expenditures									938	948	1,448
Machinery, Energy & Transportation \| Intersegment Eliminations
Reportable Segments
Sales and revenues									3,882	2,902	3,318
Construction Industries \| Reportable Segments Including Intersegment Eliminations
Reportable Segments
Sales and revenues									19,240	15,690	17,906
Construction Industries \| Reportable segments
Reportable Segments
Sales and revenues									19,133	15,612	17,797
Depreciation and amortization									400	458	505
Consolidated profit before taxes									3,258	1,650	1,865
Segment assets	4,838				5,367				4,838	5,367	6,176
Capital expenditures									228	186	276
Construction Industries \| Intersegment Eliminations
Reportable Segments
Sales and revenues									107	78	109
Resource Industries \| Reportable Segments Including Intersegment Eliminations
Reportable Segments
Sales and revenues									7,861	6,010	8,071
Resource Industries \| Reportable segments
Reportable Segments
Sales and revenues									7,504	5,726	7,739
Depreciation and amortization									514	607	643
Consolidated profit before taxes									690	(1,047)	1
Segment assets	6,403				7,135				6,403	7,135	8,931
Capital expenditures									183	243	303
Resource Industries \| Intersegment Eliminations
Reportable Segments
Sales and revenues									357	284	332
Energy & Transportation \| Reportable Segments Including Intersegment Eliminations
Reportable Segments
Sales and revenues									19,382	16,951	21,396
Energy & Transportation \| Reportable segments
Reportable Segments
Sales and revenues									15,964	14,411	18,519
Depreciation and amortization									653	677	690
Consolidated profit before taxes									2,883	2,222	3,390
Segment assets	7,564				7,791				7,564	7,791	8,769
Capital expenditures									527	519	869
Energy & Transportation \| Intersegment Eliminations
Reportable Segments
Sales and revenues									3,418	2,540	2,877
Financial Products Segment \| Reportable Segments Including Intersegment Eliminations
Reportable Segments
Sales and revenues									3,093	2,993	3,078
Financial Products Segment \| Reportable segments
Reportable Segments
Sales and revenues									3,093	2,993	3,078
Depreciation and amortization									820	849	848
Consolidated profit before taxes									792	702	809
Segment assets	$ 34,893				$ 35,224				34,893	35,224	35,729
Capital expenditures									1,373	1,638	1,465
Financial Products Segment \| Intersegment Eliminations
Reportable Segments
Sales and revenues									$ 0	$ 0	$ 0