The percent of goodwill arising from a business combination that is expected to be deductible for tax purposes.

No definition available.

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- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275

+ Details

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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.

+ Details

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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=64834752&loc=SL49117168-202975

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

The number of businesses acquired by the entity during the period.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3213-108585

+ Details

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Balance Type:	credit
Period Type:	duration

- Details

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- Details

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- Details

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- Details

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- Details

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Acquisitions/Divestitures - Businesses Acquired (Details) $ in Millions			1 Months Ended	3 Months Ended	9 Months Ended
	Apr. 08, 2016 USD ($)	Jan. 29, 2016 USD ($)	Jul. 31, 2017 USD ($)	Jun. 30, 2016 item	Sep. 30, 2016 USD ($) item	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Acquisitions:
Businesses acquired, number (in entities) \| item					12
Businesses acquired, aggregate cost					$ 5,688
Goodwill					36,401	$ 32,021	$ 30,556
Technology Services & Cloud Platforms
Acquisitions:
Goodwill					10,333	10,156	9,373
Global Business Services
Acquisitions:
Goodwill					4,693	4,396	4,555
Cognitive Solutions
Acquisitions:
Goodwill					$ 19,516	$ 15,621	$ 15,156
The Weather Company
Acquisitions:
Businesses acquired, cash consideration		$ 2,278
Goodwill		$ 1,717
Expected percent of goodwill deductible for tax purposes					0.00%
Acquired intangible asset, weighted average useful life		6 years 10 months 24 days
The Weather Company \| Cognitive Solutions
Acquisitions:
Goodwill		$ 1,717
Truven Health Analytics
Acquisitions:
Businesses acquired, aggregate cost	$ 2,612
Goodwill	$ 1,933
Expected percent of goodwill deductible for tax purposes					15.00%
Acquired intangible asset, weighted average useful life	6 years 10 months 24 days
Truven Health Analytics \| Expected
Acquisitions:
Businesses acquired, cash consideration			$ 200
Truven Health Analytics \| Cognitive Solutions
Acquisitions:
Goodwill	$ 1,933
Other Acquisitions
Acquisitions:
Goodwill					$ 487
Expected percent of goodwill deductible for tax purposes					50.00%
Acquired intangible asset, weighted average useful life					6 years 4 months 24 days
Other Acquisitions \| Technology Services & Cloud Platforms
Acquisitions:
Businesses acquired, number (in entities) \| item					3
Goodwill					$ 91
Other Acquisitions \| Global Business Services
Acquisitions:
Businesses acquired, number (in entities) \| item					5
Goodwill					$ 278
Other Acquisitions \| Cognitive Solutions
Acquisitions:
Businesses acquired, number (in entities) \| item				2
Goodwill					$ 118