Represents the number of categories in which the entity categorizes the products and services.

No definition available.

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- Definition

Amount of the universal taxes and surcharges that are reflected in the statement of income (included in both operating revenues and expenses).

+ References

No definition available.

+ Details

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13531-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
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-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6404-108592

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13537-108611

+ 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 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/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

+ 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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Segment Information (Details 2) $ in Millions	3 Months Ended								12 Months Ended
Segment Information (Details 2) $ 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 ($) category	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Operating revenues by products and services
Operating revenues	$ 5,323	$ 4,034	$ 4,090	$ 4,209	$ 4,289	$ 4,382	$ 4,398	$ 4,401	$ 17,656	$ 17,470	$ 17,900
Number of categories of products and services (categories) \| category									5
Surcharge amount on customers' bills									$ 601	572	544
Regulatory
Operating revenues by products and services
Operating revenues									732	704	729
Total Non-Segment Revenues
Operating revenues by products and services
Operating revenues									732	704	729
Business
Operating revenues by products and services
Operating revenues									11,220	10,704	10,977
Business \| IP & Data Services - Business
Operating revenues by products and services
Operating revenues									3,595	2,851	2,704
Business \| Transport & Infrastructure - Business
Operating revenues by products and services
Operating revenues									3,680	3,929	4,157
Business \| Voice & Collaboration
Operating revenues by products and services
Operating revenues									3,294	3,284	3,429
Business \| IT & Managed Services
Operating revenues by products and services
Operating revenues									651	640	687
Consumer
Operating revenues by products and services
Operating revenues									5,704	6,062	6,194
Consumer \| Voice & Collaboration
Operating revenues by products and services
Operating revenues									2,385	2,659	2,897
Consumer \| IP & Data Services - Consumer
Operating revenues by products and services
Operating revenues									448	506	468
Consumer \| Transport & Infrastructure - Consumer
Operating revenues by products and services
Operating revenues									$ 2,871	$ 2,897	$ 2,829
Total operating revenues \| Non-US
Operating revenues by products and services
Concentration risk (percent)									2.00%
Total assets \| Non-US
Operating revenues by products and services
Concentration risk (percent)									10.00%
Total long-lived assets \| Non-US
Operating revenues by products and services
Concentration risk (percent)									10.00%