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Acquisitions (Narrative) (Details) $ in Millions |  |  | 12 Months Ended
--- | --- | --- | ---
Dec. 03, 2018 USD ($) | Jun. 01, 2018 USD ($) | Dec. 31, 2018 USD ($) item
Number of businesses acquired | item |  |  | 2
Purchase consideration |  |  | $ 841
Communications Market Division [Member] |  |  |
Purchase consideration |  |  | 841
Other intangible assets |  |  | 525
Business combination, acquisition related costs |  |  | 18
Communications Market Division [Member] | Customer Relationships [Member] |  |  |
Other intangible assets |  |  | $ 434
Intangible asset estimated useful lives |  |  | 14 years
Communications Market Division [Member] | Other Intangible Assets [Member] |  |  |
Other intangible assets |  |  | $ 91
Intangible asset estimated useful lives |  |  | 11 years
Purchased Assets [Member] |  |  |
Purchase consideration |  | $ 801 |
German Services Company [Member] |  |  |
Purchase consideration | $ 40 |  |
Business combination ownership interest acquired | 100.00% |  |
Minimum [Member] |  |  |
Intangible asset estimated useful lives |  |  | 4 years
Maximum [Member] |  |  |
Intangible asset estimated useful lives |  |  | 50 years

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- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=84229725&loc=d3e1043-128460 + 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=109124213&loc=d3e6613-128477 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=109124213&loc=d3e6578-128477 + Details
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- Definition Amount of intangible assets, excluding goodwill, acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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