Supplemental Guarantor Information - Condensed Consolidating Statements of Cash Flows (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015 |
Condensed Consolidating Statements of Cash Flows | | | | |
Cash flows provided by (used in) operating activities | | | $ 141.7 | $ 94.7 |
Capital expenditures | $ (67.2) | $ (73.2) | (188.8) | (205.7) |
Increase in restricted cash | | | (90.7) | 0 |
Dividends received from CyrusOne | | | 6.2 | 19.5 |
Proceeds from sale of CyrusOne | | | 181.2 | 596.3 |
Proceeds from sale of assets | | | 0 | 0.6 |
Other investing activities | | | (0.8) | (0.2) |
Net cash (used in) provided by investing activities | | | (92.9) | 410.5 |
Proceeds from issuance of long-term debt | | | 425 | 0 |
Net (decrease) increase in corporate credit and receivables facilities with initial maturities less than 90 days | | | 5.9 | (19.2) |
Repayment of debt | | | (461) | (509.8) |
Debt issuance costs | | | (8.4) | (0.4) |
Common stock repurchase | | | (4.8) | 0 |
Other financing activities | | | 3.4 | (0.5) |
Cash flows provided by (used in) financing activities | | | (47.7) | (537.7) |
Increase (decrease) in cash and cash equivalents | | | 1.1 | (32.5) |
Cash and cash equivalents at beginning of period | | | 7.4 | 57.9 |
Cash and cash equivalents at end of period | 8.5 | 25.4 | 8.5 | 25.4 |
Notes guaranteed by parent [Member] | | | | |
Condensed Consolidating Statements of Cash Flows | | | | |
Cash flows provided by (used in) operating activities | | | 141.7 | 94.7 |
Capital expenditures | | | (188.8) | (205.7) |
Increase in restricted cash | | | (90.7) | |
Dividends received from CyrusOne | | | 6.2 | 19.5 |
Proceeds from sale of CyrusOne | | | 181.2 | 596.3 |
Proceeds from sale of assets | | | | 0.6 |
Distributions received from subsidiaries | | | 0 | 0 |
Funding between parent and subsidiaries, net | | | 0 | 0 |
Other investing activities | | | (0.8) | (0.2) |
Net cash (used in) provided by investing activities | | | (92.9) | 410.5 |
Funding between parent and subsidiaries, net | | | 0 | 0 |
Distributions paid to Parent | | | 0 | 0 |
Proceeds from issuance of long-term debt | | | 425 | |
Net (decrease) increase in corporate credit and receivables facilities with initial maturities less than 90 days | | | 5.9 | (19.2) |
Repayment of debt | | | (461) | (509.8) |
Debt issuance costs | | | (8.4) | (0.4) |
Common stock repurchase | | | (4.8) | |
Other financing activities | | | (4.4) | (8.3) |
Cash flows provided by (used in) financing activities | | | (47.7) | (537.7) |
Increase (decrease) in cash and cash equivalents | | | 1.1 | (32.5) |
Cash and cash equivalents at beginning of period | | | 7.4 | 57.9 |
Cash and cash equivalents at end of period | 8.5 | 25.4 | 8.5 | 25.4 |
Notes guaranteed by parent [Member] | Consolidation, Eliminations [Member] | | | | |
Condensed Consolidating Statements of Cash Flows | | | | |
Cash flows provided by (used in) operating activities | | | 0 | 0 |
Capital expenditures | | | 0 | 0 |
Increase in restricted cash | | | 0 | |
Dividends received from CyrusOne | | | 0 | 0 |
Proceeds from sale of CyrusOne | | | 0 | 0 |
Proceeds from sale of assets | | | | 0 |
Distributions received from subsidiaries | | | (9) | (8.7) |
Funding between parent and subsidiaries, net | | | 62.4 | 499.4 |
Other investing activities | | | 0 | 0 |
Net cash (used in) provided by investing activities | | | 53.4 | 490.7 |
Funding between parent and subsidiaries, net | | | (62.4) | (499.4) |
Distributions paid to Parent | | | 9 | 8.7 |
Proceeds from issuance of long-term debt | | | 0 | |
Net (decrease) increase in corporate credit and receivables facilities with initial maturities less than 90 days | | | 0 | 0 |
Repayment of debt | | | 0 | 0 |
Debt issuance costs | | | 0 | 0 |
Common stock repurchase | | | 0 | |
Other financing activities | | | 0 | 0 |
Cash flows provided by (used in) financing activities | | | (53.4) | (490.7) |
Increase (decrease) in cash and cash equivalents | | | 0 | 0 |
Cash and cash equivalents at beginning of period | | | 0 | 0 |
Cash and cash equivalents at end of period | 0 | 0 | 0 | 0 |
Notes guaranteed by parent [Member] | Parent Company [Member] | | | | |
Condensed Consolidating Statements of Cash Flows | | | | |
Cash flows provided by (used in) operating activities | | | (41.9) | (13.5) |
Capital expenditures | | | (0.2) | (0.1) |
Increase in restricted cash | | | (90.7) | |
Dividends received from CyrusOne | | | 0 | 0 |
Proceeds from sale of CyrusOne | | | 0 | 0 |
Proceeds from sale of assets | | | | 0 |
Distributions received from subsidiaries | | | 9 | 8.7 |
Funding between parent and subsidiaries, net | | | 135 | 0 |
Other investing activities | | | (0.8) | (0.2) |
Net cash (used in) provided by investing activities | | | 52.3 | 8.4 |
Funding between parent and subsidiaries, net | | | 0 | 482.9 |
Distributions paid to Parent | | | 0 | 0 |
Proceeds from issuance of long-term debt | | | 425 | |
Net (decrease) increase in corporate credit and receivables facilities with initial maturities less than 90 days | | | 0 | 0 |
Repayment of debt | | | (415.9) | (503.4) |
Debt issuance costs | | | (8.1) | (0.2) |
Common stock repurchase | | | (4.8) | |
Other financing activities | | | (4.4) | (8.3) |
Cash flows provided by (used in) financing activities | | | (8.2) | (29) |
Increase (decrease) in cash and cash equivalents | | | 2.2 | (34.1) |
Cash and cash equivalents at beginning of period | | | 4.6 | 56.2 |
Cash and cash equivalents at end of period | 6.8 | 22.1 | 6.8 | 22.1 |
Notes guaranteed by parent [Member] | Cincinnati Bell Telephone Company [Member] | | | | |
Condensed Consolidating Statements of Cash Flows | | | | |
Cash flows provided by (used in) operating activities | | | 145.3 | 162.2 |
Capital expenditures | | | (169.6) | (187.4) |
Increase in restricted cash | | | 0 | |
Dividends received from CyrusOne | | | 0 | 0 |
Proceeds from sale of CyrusOne | | | 0 | 0 |
Proceeds from sale of assets | | | | 0.1 |
Distributions received from subsidiaries | | | 0 | 0 |
Funding between parent and subsidiaries, net | | | 0 | 29.3 |
Other investing activities | | | 0 | 0 |
Net cash (used in) provided by investing activities | | | (169.6) | (158) |
Funding between parent and subsidiaries, net | | | 66.6 | 0 |
Distributions paid to Parent | | | 0 | 0 |
Proceeds from issuance of long-term debt | | | 0 | |
Net (decrease) increase in corporate credit and receivables facilities with initial maturities less than 90 days | | | 0 | 0 |
Repayment of debt | | | (42.3) | (3.7) |
Debt issuance costs | | | 0 | 0 |
Common stock repurchase | | | 0 | |
Other financing activities | | | 0 | 0 |
Cash flows provided by (used in) financing activities | | | 24.3 | (3.7) |
Increase (decrease) in cash and cash equivalents | | | 0 | 0.5 |
Cash and cash equivalents at beginning of period | | | 1 | 1 |
Cash and cash equivalents at end of period | 1 | 1.5 | 1 | 1.5 |
Notes guaranteed by parent [Member] | Non-Guarantor Subsidiaries [Member] | | | | |
Condensed Consolidating Statements of Cash Flows | | | | |
Cash flows provided by (used in) operating activities | | | 38.3 | (54) |
Capital expenditures | | | (19) | (18.2) |
Increase in restricted cash | | | 0 | |
Dividends received from CyrusOne | | | 6.2 | 19.5 |
Proceeds from sale of CyrusOne | | | 181.2 | 596.3 |
Proceeds from sale of assets | | | | 0.5 |
Distributions received from subsidiaries | | | 0 | 0 |
Funding between parent and subsidiaries, net | | | (197.4) | (528.7) |
Other investing activities | | | 0 | 0 |
Net cash (used in) provided by investing activities | | | (29) | 69.4 |
Funding between parent and subsidiaries, net | | | (4.2) | 16.5 |
Distributions paid to Parent | | | (9) | (8.7) |
Proceeds from issuance of long-term debt | | | 0 | |
Net (decrease) increase in corporate credit and receivables facilities with initial maturities less than 90 days | | | 5.9 | (19.2) |
Repayment of debt | | | (2.8) | (2.7) |
Debt issuance costs | | | (0.3) | (0.2) |
Common stock repurchase | | | 0 | |
Other financing activities | | | 0 | 0 |
Cash flows provided by (used in) financing activities | | | (10.4) | (14.3) |
Increase (decrease) in cash and cash equivalents | | | (1.1) | 1.1 |
Cash and cash equivalents at beginning of period | | | 1.8 | 0.7 |
Cash and cash equivalents at end of period | 0.7 | 1.8 | 0.7 | 1.8 |
Notes guaranteed by subsidiaries [Member] | | | | |
Condensed Consolidating Statements of Cash Flows | | | | |
Cash flows provided by (used in) operating activities | | | 141.7 | 94.7 |
Capital expenditures | | | (188.8) | (205.7) |
Increase in restricted cash | | | (90.7) | |
Dividends received from CyrusOne | | | 6.2 | 19.5 |
Proceeds from sale of CyrusOne | | | 181.2 | 596.3 |
Proceeds from sale of assets | | | | 0.6 |
Distributions received from subsidiaries | | | 0 | 0 |
Funding between parent and subsidiaries, net | | | 0 | 0 |
Other investing activities | | | (0.8) | (0.2) |
Net cash (used in) provided by investing activities | | | (92.9) | 410.5 |
Funding between parent and subsidiaries, net | | | 0 | 0 |
Distributions paid to Parent | | | 0 | 0 |
Proceeds from issuance of long-term debt | | | 425 | |
Net (decrease) increase in corporate credit and receivables facilities with initial maturities less than 90 days | | | 5.9 | (19.2) |
Repayment of debt | | | (461) | (509.8) |
Debt issuance costs | | | (8.4) | (0.4) |
Common stock repurchase | | | (4.8) | |
Other financing activities | | | (4.4) | (8.3) |
Cash flows provided by (used in) financing activities | | | (47.7) | (537.7) |
Increase (decrease) in cash and cash equivalents | | | 1.1 | (32.5) |
Cash and cash equivalents at beginning of period | | | 7.4 | 57.9 |
Cash and cash equivalents at end of period | 8.5 | 25.4 | 8.5 | 25.4 |
Notes guaranteed by subsidiaries [Member] | Consolidation, Eliminations [Member] | | | | |
Condensed Consolidating Statements of Cash Flows | | | | |
Cash flows provided by (used in) operating activities | | | 0 | 0 |
Capital expenditures | | | 0 | 0 |
Increase in restricted cash | | | 0 | |
Dividends received from CyrusOne | | | 0 | 0 |
Proceeds from sale of CyrusOne | | | 0 | 0 |
Proceeds from sale of assets | | | | 0 |
Distributions received from subsidiaries | | | (9) | (8.7) |
Funding between parent and subsidiaries, net | | | 48.3 | 501.8 |
Other investing activities | | | 0 | 0 |
Net cash (used in) provided by investing activities | | | 39.3 | 493.1 |
Funding between parent and subsidiaries, net | | | (48.3) | (501.8) |
Distributions paid to Parent | | | 9 | 8.7 |
Proceeds from issuance of long-term debt | | | 0 | |
Net (decrease) increase in corporate credit and receivables facilities with initial maturities less than 90 days | | | 0 | 0 |
Repayment of debt | | | 0 | 0 |
Debt issuance costs | | | 0 | 0 |
Common stock repurchase | | | 0 | |
Other financing activities | | | 0 | 0 |
Cash flows provided by (used in) financing activities | | | (39.3) | (493.1) |
Increase (decrease) in cash and cash equivalents | | | 0 | 0 |
Cash and cash equivalents at beginning of period | | | 0 | 0 |
Cash and cash equivalents at end of period | 0 | 0 | 0 | 0 |
Notes guaranteed by subsidiaries [Member] | Parent Company [Member] | | | | |
Condensed Consolidating Statements of Cash Flows | | | | |
Cash flows provided by (used in) operating activities | | | (41.9) | (13.5) |
Capital expenditures | | | (0.2) | (0.1) |
Increase in restricted cash | | | (90.7) | |
Dividends received from CyrusOne | | | 0 | 0 |
Proceeds from sale of CyrusOne | | | 0 | 0 |
Proceeds from sale of assets | | | | 0 |
Distributions received from subsidiaries | | | 9 | 8.7 |
Funding between parent and subsidiaries, net | | | 135 | 0 |
Other investing activities | | | (0.8) | (0.2) |
Net cash (used in) provided by investing activities | | | 52.3 | 8.4 |
Funding between parent and subsidiaries, net | | | 0 | 482.9 |
Distributions paid to Parent | | | 0 | 0 |
Proceeds from issuance of long-term debt | | | 425 | |
Net (decrease) increase in corporate credit and receivables facilities with initial maturities less than 90 days | | | 0 | 0 |
Repayment of debt | | | (415.9) | (503.4) |
Debt issuance costs | | | (8.1) | (0.2) |
Common stock repurchase | | | (4.8) | |
Other financing activities | | | (4.4) | (8.3) |
Cash flows provided by (used in) financing activities | | | (8.2) | (29) |
Increase (decrease) in cash and cash equivalents | | | 2.2 | (34.1) |
Cash and cash equivalents at beginning of period | | | 4.6 | 56.2 |
Cash and cash equivalents at end of period | 6.8 | 22.1 | 6.8 | 22.1 |
Notes guaranteed by subsidiaries [Member] | Guarantor Subsidiaries [Member] | | | | |
Condensed Consolidating Statements of Cash Flows | | | | |
Cash flows provided by (used in) operating activities | | | 17.5 | (35) |
Capital expenditures | | | (19) | (18.2) |
Increase in restricted cash | | | 0 | |
Dividends received from CyrusOne | | | 6.2 | 19.5 |
Proceeds from sale of CyrusOne | | | 181.2 | 596.3 |
Proceeds from sale of assets | | | | 0.5 |
Distributions received from subsidiaries | | | 0 | 0 |
Funding between parent and subsidiaries, net | | | (183.3) | (560.3) |
Other investing activities | | | 0 | 0 |
Net cash (used in) provided by investing activities | | | (14.9) | 37.8 |
Funding between parent and subsidiaries, net | | | 0 | 0 |
Distributions paid to Parent | | | 0 | 0 |
Proceeds from issuance of long-term debt | | | 0 | |
Net (decrease) increase in corporate credit and receivables facilities with initial maturities less than 90 days | | | 0 | 0 |
Repayment of debt | | | (2.8) | (2.7) |
Debt issuance costs | | | 0 | 0 |
Common stock repurchase | | | 0 | |
Other financing activities | | | 0 | 0 |
Cash flows provided by (used in) financing activities | | | (2.8) | (2.7) |
Increase (decrease) in cash and cash equivalents | | | (0.2) | 0.1 |
Cash and cash equivalents at beginning of period | | | 0.4 | 0.2 |
Cash and cash equivalents at end of period | 0.2 | 0.3 | 0.2 | 0.3 |
Notes guaranteed by subsidiaries [Member] | Non-Guarantor Subsidiaries [Member] | | | | |
Condensed Consolidating Statements of Cash Flows | | | | |
Cash flows provided by (used in) operating activities | | | 166.1 | 143.2 |
Capital expenditures | | | (169.6) | (187.4) |
Increase in restricted cash | | | 0 | |
Dividends received from CyrusOne | | | 0 | 0 |
Proceeds from sale of CyrusOne | | | 0 | 0 |
Proceeds from sale of assets | | | | 0.1 |
Distributions received from subsidiaries | | | 0 | 0 |
Funding between parent and subsidiaries, net | | | 0 | 58.5 |
Other investing activities | | | 0 | 0 |
Net cash (used in) provided by investing activities | | | (169.6) | (128.8) |
Funding between parent and subsidiaries, net | | | 48.3 | 18.9 |
Distributions paid to Parent | | | (9) | (8.7) |
Proceeds from issuance of long-term debt | | | 0 | |
Net (decrease) increase in corporate credit and receivables facilities with initial maturities less than 90 days | | | 5.9 | (19.2) |
Repayment of debt | | | (42.3) | (3.7) |
Debt issuance costs | | | (0.3) | (0.2) |
Common stock repurchase | | | 0 | |
Other financing activities | | | 0 | 0 |
Cash flows provided by (used in) financing activities | | | 2.6 | (12.9) |
Increase (decrease) in cash and cash equivalents | | | (0.9) | 1.5 |
Cash and cash equivalents at beginning of period | | | 2.4 | 1.5 |
Cash and cash equivalents at end of period | $ 1.5 | $ 3 | $ 1.5 | $ 3 |