Description of Business (Proposed Merger) (Details) - Twin Acquisition Corp. $ / shares in Units, $ in Millions	6 Months Ended
Jun. 30, 2017 USD ($) $ / shares shares
Business Acquisition [Line Items]
Proposed merger, agreement termination fee \| $	$ 11.9
Proposed merger, transaction fees \| $	$ 0.2
Contingent consideration, cash
Business Acquisition [Line Items]
Proposed merger, company shareholders' consideration in cash (per share) \| $ / shares	$ 30.75
Proposed merger, consideration proration of final distribution (as a percentage)	60.00%
Contingent consideration, Cincinnati Bell common stock
Business Acquisition [Line Items]
Proposed merger, company shareholders' consideration in Cincinnati Bell common stock shares \| shares	1.6305
Proposed merger, consideration proration of final distribution (as a percentage)	40.00%
Contingent consideration, cash and Cincinnati Bell common stock mixture
Business Acquisition [Line Items]
Proposed merger, company shareholders' consideration in cash (per share) \| $ / shares	$ 18.45
Proposed merger, company shareholders' consideration in Cincinnati Bell common stock shares \| shares	0.6522

Represents the amount of contingent fee from the Company in the event of merger termination.

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Represents cash consideration, pursuant to merger agreement, to Company shareholders for each share of common stock outstanding.

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Represents common stock consideration, pursuant to merger agreement, to Company shareholders for each share of common stock outstanding.

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Represents consideration proration of final distribution, pursuant to Merger Agreement, as a percentage.

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Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

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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.

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