The aggregated revenue from financial services, including lease and loan or working capital financing arrangements, which is excluded from the scope of ASC 606.

No definition available.

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- Definition

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.

+ References

No definition available.

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- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

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- Definition

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).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(1))
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

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Revenue Recognition - Disaggregation of Revenue by Major Products/Service Offerings (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenue by Major Products/Service Offerings
Total Revenue	$ 19,161	$ 20,003	$ 37,342	$ 39,075
Business Segments, Excluding Intersegment Revenue
Revenue by Major Products/Service Offerings
Total Revenue	18,741	19,500	36,506	38,057
Other
Revenue by Major Products/Service Offerings
Total Revenue	420	503	837	1,017
Cloud & Cognitive Software \| Business Segments, Excluding Intersegment Revenue
Revenue by Major Products/Service Offerings
Total Revenue	5,645	5,470	10,682	10,586
Global Business Services \| Business Segments, Excluding Intersegment Revenue
Revenue by Major Products/Service Offerings
Total Revenue	4,155	4,135	8,274	8,250
Global Technology Services \| Business Segments, Excluding Intersegment Revenue
Revenue by Major Products/Service Offerings
Total Revenue	6,837	7,325	13,711	14,746
Systems \| Business Segments, Excluding Intersegment Revenue
Revenue by Major Products/Service Offerings
Total Revenue	1,753	2,177	3,081	3,676
Global Financing \| Business Segments, Excluding Intersegment Revenue
Revenue by Major Products/Service Offerings
Total Revenue	351	394	757	799
Cognitive Applications
Revenue by Major Products/Service Offerings
Revenue	1,454	1,413	2,762	2,699
Cognitive Applications \| Cloud & Cognitive Software \| Business Segments, Excluding Intersegment Revenue
Revenue by Major Products/Service Offerings
Revenue	1,454	1,413	2,762	2,699
Cloud & Data Platforms
Revenue by Major Products/Service Offerings
Revenue	2,173	2,079	4,090	4,029
Cloud & Data Platforms \| Cloud & Cognitive Software \| Business Segments, Excluding Intersegment Revenue
Revenue by Major Products/Service Offerings
Revenue	2,173	2,079	4,090	4,029
Transaction Processing Platforms
Revenue by Major Products/Service Offerings
Revenue	2,018	1,978	3,830	3,858
Transaction Processing Platforms \| Cloud & Cognitive Software \| Business Segments, Excluding Intersegment Revenue
Revenue by Major Products/Service Offerings
Revenue	2,018	1,978	3,830	3,858
Consulting
Revenue by Major Products/Service Offerings
Revenue	1,978	1,931	3,942	3,798
Consulting \| Global Business Services \| Business Segments, Excluding Intersegment Revenue
Revenue by Major Products/Service Offerings
Revenue	1,978	1,931	3,942	3,798
Global Process Services
Revenue by Major Products/Service Offerings
Revenue	258	258	505	504
Global Process Services \| Global Business Services \| Business Segments, Excluding Intersegment Revenue
Revenue by Major Products/Service Offerings
Revenue	258	258	505	504
Application Management
Revenue by Major Products/Service Offerings
Revenue	1,919	1,946	3,827	3,948
Application Management \| Global Business Services \| Business Segments, Excluding Intersegment Revenue
Revenue by Major Products/Service Offerings
Revenue	1,919	1,946	3,827	3,948
Infrastructure & Cloud Services
Revenue by Major Products/Service Offerings
Revenue	5,174	5,575	10,383	11,214
Infrastructure & Cloud Services \| Global Technology Services \| Business Segments, Excluding Intersegment Revenue
Revenue by Major Products/Service Offerings
Revenue	5,174	5,575	10,383	11,214
Technology Support Services
Revenue by Major Products/Service Offerings
Revenue	1,663	1,750	3,328	3,531
Technology Support Services \| Global Technology Services \| Business Segments, Excluding Intersegment Revenue
Revenue by Major Products/Service Offerings
Revenue	1,663	1,750	3,328	3,531
Systems Hardware
Revenue by Major Products/Service Offerings
Revenue	1,328	1,756	2,241	2,848
Systems Hardware \| Systems \| Business Segments, Excluding Intersegment Revenue
Revenue by Major Products/Service Offerings
Revenue	1,328	1,756	2,241	2,848
Operating Systems Software
Revenue by Major Products/Service Offerings
Revenue	425	421	840	828
Operating Systems Software \| Systems \| Business Segments, Excluding Intersegment Revenue
Revenue by Major Products/Service Offerings
Revenue	425	421	840	828
Global Financing
Revenue by Major Products/Service Offerings
Financial Services Revenue	351	394	757	799
Global Financing \| Global Financing \| Business Segments, Excluding Intersegment Revenue
Revenue by Major Products/Service Offerings
Financial Services Revenue	351	394	757	799
Other Revenue
Revenue by Major Products/Service Offerings
Revenue	420	503	837	1,017
Other Revenue \| Other
Revenue by Major Products/Service Offerings
Revenue	$ 420	$ 503	$ 837	$ 1,017