Number of business activities

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- Definition

Number of Segment Managers Responsible for Operations

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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.

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- Definition

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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- Definition

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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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.

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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.

+ References

No definition available.

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Segment Information (Details) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
Segment Information (Details) $ in Millions	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) operating_segment segment_manager reportable_segment business_activity	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Segment Reporting Information [Line Items]
Business activity (in business activities) \| business_activity			1
Segment managers responsible for operations (in segment managers) \| segment_manager			0
Number of operating segments (in operating segments) \| operating_segment			1
Number of reportable segments (in reportable segments) \| reportable_segment			1
Total revenue	$ 651.1	$ 548.1	$ 1,846.4	$ 1,544.9
Property and equipment - net	$ 419.4		$ 419.4		$ 344.3
Exclusive Networks Group (Exclusive) [Member] \| Customer Concentration Risk [Member] \| Revenue [Member]
Segment Reporting Information [Line Items]
Concentration (percent)	29.00%	30.00%	30.00%	31.00%
Exclusive Networks Group (Exclusive) [Member] \| Customer Concentration Risk [Member] \| Accounts Receivable [Member]
Segment Reporting Information [Line Items]
Concentration (percent)			31.00%		36.00%
Ingram Micro, Inc. (Ingram Micro) [Member] \| Customer Concentration Risk [Member] \| Revenue [Member]
Segment Reporting Information [Line Items]
Concentration (percent)	10.00%	11.00%	10.00%	11.00%
Ingram Micro, Inc. (Ingram Micro) [Member] \| Customer Concentration Risk [Member] \| Accounts Receivable [Member]
Segment Reporting Information [Line Items]
Concentration (percent)			11.00%		10.00%
Tech Data Corporation [Member] \| Customer Concentration Risk [Member] \| Accounts Receivable [Member]
Segment Reporting Information [Line Items]
Concentration (percent)			10.00%
Americas [Member]
Segment Reporting Information [Line Items]
Total revenue	$ 272.4	$ 241.0	$ 776.0	$ 668.0
Property and equipment - net	399.1		399.1		$ 323.4
U.S. [Member]
Segment Reporting Information [Line Items]
Total revenue	206.0	182.3	589.1	506.9
Property and equipment - net	270.9		270.9		197.4
Canada [Member]
Segment Reporting Information [Line Items]
Property and equipment - net	121.3		121.3		120.5
Latin America [Member]
Segment Reporting Information [Line Items]
Property and equipment - net	6.9		6.9		5.5
Other Americas [Member]
Segment Reporting Information [Line Items]
Total revenue	66.4	58.7	186.9	161.1
EMEA [Member]
Segment Reporting Information [Line Items]
Total revenue	243.3	200.9	693.5	571.1
Property and equipment - net	15.3		15.3		15.2
APAC [Member]
Segment Reporting Information [Line Items]
Total revenue	135.4	$ 106.2	376.9	$ 305.8
Property and equipment - net	$ 5.0		$ 5.0		$ 5.7