Supplemental Guarantor Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Condensed Consolidating Statements of Operations and Comprehensive Income
Revenue	$ 310.8	$ 368.2	$ 948.5	$ 1,099.2
Operating costs and expenses	253.1	302.2	824.8	887.0
Operating (loss) income	57.7	66.0	123.7	212.2
Interest expense (income), net	46.7	55.2	140.0	163.3
Other (income) expense, net	(1.2)	0.1	(1.4)	1.6
(Loss) income before equity in earnings of subsidiaries and income taxes	10.7	10.7	(23.0)	47.3
Income tax (benefit) expense	1.4	6.8	3.6	26.3
Net income (loss)	9.3	3.9	(26.6)	21.0
Total comprehensive income	34.1	6.2	9.8	27.4
Preferred stock dividends	2.6	2.6	7.8	7.8
Net income (loss) applicable to common shareowners	6.7	1.3	(34.4)	13.2
Condensed Consolidating Balance Sheets
Cash and cash equivalents	413.7	7.7	413.7	7.7
Other current assets	3.6		3.6		11.6
Total current assets	650.3		650.3		303.5
Property, plant and equipment, net	892.5		892.5		1,587.4
Investment in CyrusOne	480.7		480.7		0
Other noncurrent assets	44.1		44.1		86.3
Total assets	2,551.7		2,551.7		2,872.4
Current portion of long-term debt	508.9		508.9		13.4
Accounts payable	107.3		107.3		135.6
Other current liabilities	32.2		32.2		40.2
Total current liabilities	797.5		797.5		355.4
Long-term debt, less current portion	2,108.2		2,108.2		2,676.0
Other noncurrent liabilities	70.9		70.9		176.5
Total liabilities	3,238.9		3,238.9		3,570.6
Shareowners' (deficit) equity	(687.2)		(687.2)		(698.2)
Total liabilities and shareowners' equity (deficit)	2,551.7		2,551.7		2,872.4
Condensed Consolidating Statements of Cash Flows
Cash flows (used in) provided by operating activities			59.8	155.0
Capital expenditures	(46.1)	(75.5)	(142.0)	(242.9)
Dividends received from CyrusOne	7.2		14.2	0
Proceeds from sale of assets			1.8	0.6
Cash divested from deconsolidation of CyrusOne			(12.2)	0
Cash flows used in investing activities			(137.8)	(252.7)
Issuance of long-term debt			536.0	0
Debt issuance costs			(6.4)	0
Borrowings on revolving facilities, net			(52.0)	44.0
Repayment of debt			(6.7)	(11.3)
Common stock repurchase			0	(0.3)
Proceeds from exercise of options and warrants			6.8	8.1
Other financing activities			(2.3)	(1.0)
Cash flows provided by (used in) financing activities			468.1	31.7
Increase (decrease) in cash and cash equivalents			390.1	(66.0)
Cash and cash equivalents at beginning of period			23.6	73.7
Cash and cash equivalents at end of period	413.7	7.7	413.7	7.7
Notes guaranteed by subsidiaries [Member]
Condensed Consolidating Statements of Operations and Comprehensive Income
Revenue	310.8	368.2	948.5	1,099.2
Operating costs and expenses	253.1	302.2	824.8	887.0
Operating (loss) income	57.7	66.0	123.7	212.2
Interest expense (income), net	46.7	55.2	140.0	163.3
Other (income) expense, net	0.3	0.1	6.7	1.6
(Loss) income before equity in earnings of subsidiaries and income taxes	10.7	10.7	(23.0)	47.3
Income tax (benefit) expense	1.4	6.8	3.6	26.3
Equity in earnings of subsidiaries, net of tax	0	0	0	0
Net income (loss)	9.3	3.9	(26.6)	21.0
Other comprehensive income (loss)	24.8	2.3	36.4	6.4
Total comprehensive income	34.1	6.2	9.8	27.4
Preferred stock dividends	2.6	2.6	7.8	7.8
Net income (loss) applicable to common shareowners	6.7	1.3	(34.4)	13.2
Condensed Consolidating Balance Sheets
Cash and cash equivalents	413.7	7.7	413.7	7.7
Receivables, net	161.4		161.4		199.0
Other current assets	75.2		75.2		80.9
Total current assets	650.3		650.3		303.5
Property, plant and equipment, net	892.5		892.5		1,587.4
Investment in CyrusOne	480.7		480.7
Goodwill and intangibles, net	107.2		107.2		487.4
Investments in and advances to subsidiaries	0		0		0
Other noncurrent assets	421.0		421.0		494.1
Total assets	2,551.7		2,551.7		2,872.4
Current portion of long-term debt	508.9		508.9		13.4
Accounts payable	108.3		108.3		135.6
Other current liabilities	180.3		180.3		206.4
Total current liabilities	797.5		797.5		355.4
Long-term debt, less current portion	2,108.2		2,108.2		2,676.0
Other noncurrent liabilities	333.2		333.2		539.2
Intercompany payables	0		0		0
Total liabilities	3,238.9		3,238.9		3,570.6
Shareowners' (deficit) equity	(687.2)		(687.2)		(698.2)
Total liabilities and shareowners' equity (deficit)	2,551.7		2,551.7		2,872.4
Condensed Consolidating Statements of Cash Flows
Cash flows (used in) provided by operating activities			59.8	155.0
Capital expenditures			(142.0)	(242.9)
Dividends received from CyrusOne			14.2
Proceeds from sale of assets			1.8	0.6
Cash divested from deconsolidation of CyrusOne			(12.2)
Other investing activities			0.4	(10.4)
Cash flows used in investing activities			(137.8)	(252.7)
Issuance of long-term debt			536.0
Funding between Parent and subsidiaries, net			0	0
Debt issuance costs			(6.4)
Borrowings on revolving facilities, net			(52.0)	44.0
Repayment of debt			(6.7)	(11.3)
Common stock repurchase				(0.3)
Proceeds from exercise of options and warrants			6.8	8.1
Other financing activities			(9.6)	(8.8)
Cash flows provided by (used in) financing activities			468.1	31.7
Increase (decrease) in cash and cash equivalents			390.1	(66.0)
Cash and cash equivalents at beginning of period			23.6	73.7
Cash and cash equivalents at end of period	413.7	7.7	413.7	7.7
Notes guaranteed by subsidiaries [Member] | Parent Company [Member]
Condensed Consolidating Statements of Operations and Comprehensive Income
Revenue	0	0	0	0
Operating costs and expenses	1.5	12.5	51.2	23.6
Operating (loss) income	(1.5)	(12.5)	(51.2)	(23.6)
Interest expense (income), net	42.9	41.1	125.0	122.5
Other (income) expense, net	(0.4)	(0.5)	(1.1)	(1.2)
(Loss) income before equity in earnings of subsidiaries and income taxes	(44.0)	(53.1)	(175.1)	(144.9)
Income tax (benefit) expense	(18.5)	(16.1)	(59.8)	(45.9)
Equity in earnings of subsidiaries, net of tax	34.8	40.9	88.7	120.0
Net income (loss)	9.3	3.9	(26.6)	21.0
Other comprehensive income (loss)	24.8	2.2	36.5	6.3
Total comprehensive income	34.1	6.1	9.9	27.3
Preferred stock dividends	2.6	2.6	7.8	7.8
Net income (loss) applicable to common shareowners	6.7	1.3	(34.4)	13.2
Condensed Consolidating Balance Sheets
Cash and cash equivalents	411.1	2.3	411.1	2.3
Receivables, net	1.6		1.6		1.0
Other current assets	2.6		2.6		3.1
Total current assets	415.3		415.3		7.9
Property, plant and equipment, net	0.1		0.1		0.1
Investment in CyrusOne	0		0
Goodwill and intangibles, net	0		0		0
Investments in and advances to subsidiaries	1,546.8		1,546.8		1,449.9
Other noncurrent assets	380.6		380.6		384.6
Total assets	2,342.8		2,342.8		1,842.5
Current portion of long-term debt	501.7		501.7		0
Accounts payable	1.0		1.0		1.2
Other current liabilities	93.3		93.3		85.6
Total current liabilities	596.0		596.0		86.8
Long-term debt, less current portion	1,877.2		1,877.2		1,841.7
Other noncurrent liabilities	274.3		274.3		383.3
Intercompany payables	282.5		282.5		228.9
Total liabilities	3,030.0		3,030.0		2,540.7
Shareowners' (deficit) equity	(687.2)		(687.2)		(698.2)
Total liabilities and shareowners' equity (deficit)	2,342.8		2,342.8		1,842.5
Condensed Consolidating Statements of Cash Flows
Cash flows (used in) provided by operating activities			(165.0)	(69.1)
Capital expenditures			0	0
Dividends received from CyrusOne			0
Proceeds from sale of assets			0	0
Cash divested from deconsolidation of CyrusOne			0
Other investing activities			0	0
Cash flows used in investing activities			0	0
Issuance of long-term debt			536.0
Funding between Parent and subsidiaries, net			45.5	2.9
Debt issuance costs			(6.4)
Borrowings on revolving facilities, net			0	0
Repayment of debt			0	0
Common stock repurchase				(0.3)
Proceeds from exercise of options and warrants			6.8	8.1
Other financing activities			(9.6)	(8.9)
Cash flows provided by (used in) financing activities			572.3	1.8
Increase (decrease) in cash and cash equivalents			407.3	(67.3)
Cash and cash equivalents at beginning of period			3.8	69.6
Cash and cash equivalents at end of period	411.1	2.3	411.1	2.3
Notes guaranteed by subsidiaries [Member] | Guarantor Subsidiaries [Member]
Condensed Consolidating Statements of Operations and Comprehensive Income
Revenue	177.4	176.6	530.7	530.5
Operating costs and expenses	162.5	158.0	496.1	474.8
Operating (loss) income	14.9	18.6	34.6	55.7
Interest expense (income), net	3.5	1.8	11.2	5.6
Other (income) expense, net	3.2	2.3	12.1	6.4
(Loss) income before equity in earnings of subsidiaries and income taxes	8.2	14.5	11.3	43.7
Income tax (benefit) expense	3.1	4.6	11.9	16.2
Equity in earnings of subsidiaries, net of tax	0	3.5	0.7	(10.3)
Net income (loss)	5.1	13.4	0.1	17.2
Other comprehensive income (loss)	0	0	0	0
Total comprehensive income	5.1	13.4	0.1	17.2
Preferred stock dividends	0	0	0	0
Net income (loss) applicable to common shareowners	5.1	13.4	0.1	17.2
Condensed Consolidating Balance Sheets
Cash and cash equivalents	0.5	0.7	0.5	0.7
Receivables, net	7.2		7.2		1.2
Other current assets	39.9		39.9		27.7
Total current assets	47.6		47.6		29.2
Property, plant and equipment, net	196.0		196.0		220.9
Investment in CyrusOne	480.7		480.7
Goodwill and intangibles, net	104.9		104.9		106.4
Investments in and advances to subsidiaries	340.3		340.3		506.4
Other noncurrent assets	190.6		190.6		218.5
Total assets	1,360.1		1,360.1		1,081.4
Current portion of long-term debt	3.0		3.0		3.9
Accounts payable	72.4		72.4		90.2
Other current liabilities	38.1		38.1		33.6
Total current liabilities	113.5		113.5		127.7
Long-term debt, less current portion	87.2		87.2		88.4
Other noncurrent liabilities	62.2		62.2		90.6
Intercompany payables	144.7		144.7		160.0
Total liabilities	407.6		407.6		466.7
Shareowners' (deficit) equity	952.5		952.5		614.7
Total liabilities and shareowners' equity (deficit)	1,360.1		1,360.1		1,081.4
Condensed Consolidating Statements of Cash Flows
Cash flows (used in) provided by operating activities			27.4	47.1
Capital expenditures			(25.6)	(22.9)
Dividends received from CyrusOne			14.2
Proceeds from sale of assets			0	0.2
Cash divested from deconsolidation of CyrusOne			0
Other investing activities			0	0
Cash flows used in investing activities			(11.4)	(22.7)
Issuance of long-term debt			0
Funding between Parent and subsidiaries, net			(12.6)	(21.0)
Debt issuance costs			0
Borrowings on revolving facilities, net			0	0
Repayment of debt			(3.2)	(3.5)
Common stock repurchase				0
Proceeds from exercise of options and warrants			0	0
Other financing activities			0	0.1
Cash flows provided by (used in) financing activities			(15.8)	(24.4)
Increase (decrease) in cash and cash equivalents			0.2	0
Cash and cash equivalents at beginning of period			0.3	0.7
Cash and cash equivalents at end of period	0.5	0.7	0.5	0.7
Notes guaranteed by subsidiaries [Member] | Non-Guarantor Subsidiaries [Member]
Condensed Consolidating Statements of Operations and Comprehensive Income
Revenue	147.5	207.0	460.0	615.1
Operating costs and expenses	103.2	147.1	319.7	435.0
Operating (loss) income	44.3	59.9	140.3	180.1
Interest expense (income), net	0.3	12.3	3.8	35.2
Other (income) expense, net	(2.5)	(1.7)	(4.3)	(3.6)
(Loss) income before equity in earnings of subsidiaries and income taxes	46.5	49.3	140.8	148.5
Income tax (benefit) expense	16.8	18.3	51.5	56.0
Equity in earnings of subsidiaries, net of tax	0	0	0	0
Net income (loss)	29.7	31.0	89.3	92.5
Other comprehensive income (loss)	0	0.1	(0.1)	0.1
Total comprehensive income	29.7	31.1	89.2	92.6
Preferred stock dividends	0	0	0	0
Net income (loss) applicable to common shareowners	29.7	31.0	89.3	92.5
Condensed Consolidating Balance Sheets
Cash and cash equivalents	2.1	4.7	2.1	4.7
Receivables, net	152.6		152.6		196.8
Other current assets	33.1		33.1		50.5
Total current assets	187.8		187.8		266.8
Property, plant and equipment, net	696.4		696.4		1,366.4
Investment in CyrusOne	0		0
Goodwill and intangibles, net	2.3		2.3		381.0
Investments in and advances to subsidiaries	260.7		260.7		192.5
Other noncurrent assets	5.1		5.1		54.1
Total assets	1,152.3		1,152.3		2,260.8
Current portion of long-term debt	4.2		4.2		9.5
Accounts payable	34.9		34.9		44.2
Other current liabilities	49.5		49.5		86.3
Total current liabilities	88.6		88.6		140.0
Long-term debt, less current portion	143.8		143.8		745.9
Other noncurrent liabilities	151.8		151.8		229.7
Intercompany payables	133.7		133.7		102.6
Total liabilities	517.9		517.9		1,218.2
Shareowners' (deficit) equity	634.4		634.4		1,042.6
Total liabilities and shareowners' equity (deficit)	1,152.3		1,152.3		2,260.8
Condensed Consolidating Statements of Cash Flows
Cash flows (used in) provided by operating activities			197.4	177.0
Capital expenditures			(116.4)	(220.0)
Dividends received from CyrusOne			0
Proceeds from sale of assets			1.8	0.4
Cash divested from deconsolidation of CyrusOne			(12.2)
Other investing activities			0.4	(10.4)
Cash flows used in investing activities			(126.4)	(230.0)
Issuance of long-term debt			0
Funding between Parent and subsidiaries, net			(32.9)	18.1
Debt issuance costs			0
Borrowings on revolving facilities, net			(52.0)	44.0
Repayment of debt			(3.5)	(7.8)
Common stock repurchase				0
Proceeds from exercise of options and warrants			0	0
Other financing activities			0	0
Cash flows provided by (used in) financing activities			(88.4)	54.3
Increase (decrease) in cash and cash equivalents			(17.4)	1.3
Cash and cash equivalents at beginning of period			19.5	3.4
Cash and cash equivalents at end of period	2.1	4.7	2.1	4.7
Notes guaranteed by subsidiaries [Member] | Consolidation, Eliminations [Member]
Condensed Consolidating Statements of Operations and Comprehensive Income
Revenue	(14.1)	(15.4)	(42.2)	(46.4)
Operating costs and expenses	(14.1)	(15.4)	(42.2)	(46.4)
Operating (loss) income	0	0	0	0
Interest expense (income), net	0	0	0	0
Other (income) expense, net	0	0	0	0
(Loss) income before equity in earnings of subsidiaries and income taxes	0	0	0	0
Income tax (benefit) expense	0	0	0	0
Equity in earnings of subsidiaries, net of tax	(34.8)	(44.4)	(89.4)	(109.7)
Net income (loss)	(34.8)	(44.4)	(89.4)	(109.7)
Other comprehensive income (loss)	0	0	0	0
Total comprehensive income	(34.8)	(44.4)	(89.4)	(109.7)
Preferred stock dividends	0	0	0	0
Net income (loss) applicable to common shareowners	(34.8)	(44.4)	(89.4)	(109.7)
Condensed Consolidating Balance Sheets
Cash and cash equivalents	0	0	0	0
Receivables, net	0		0		0
Other current assets	(0.4)		(0.4)		(0.4)
Total current assets	(0.4)		(0.4)		(0.4)
Property, plant and equipment, net	0		0		0
Investment in CyrusOne	0		0
Goodwill and intangibles, net	0		0		0
Investments in and advances to subsidiaries	(2,147.8)		(2,147.8)		(2,148.8)
Other noncurrent assets	(155.3)		(155.3)		(163.1)
Total assets	(2,303.5)		(2,303.5)		(2,312.3)
Current portion of long-term debt	0		0		0
Accounts payable	0		0		0
Other current liabilities	(0.6)		(0.6)		0.9
Total current liabilities	(0.6)		(0.6)		0.9
Long-term debt, less current portion	0		0		0
Other noncurrent liabilities	(155.1)		(155.1)		(164.4)
Intercompany payables	(560.9)		(560.9)		(491.5)
Total liabilities	(716.6)		(716.6)		(655.0)
Shareowners' (deficit) equity	(1,586.9)		(1,586.9)		(1,657.3)
Total liabilities and shareowners' equity (deficit)	(2,303.5)		(2,303.5)		(2,312.3)
Condensed Consolidating Statements of Cash Flows
Cash flows (used in) provided by operating activities			0	0
Capital expenditures			0	0
Dividends received from CyrusOne			0
Proceeds from sale of assets			0	0
Cash divested from deconsolidation of CyrusOne			0
Other investing activities			0	0
Cash flows used in investing activities			0	0
Issuance of long-term debt			0
Funding between Parent and subsidiaries, net			0	0
Debt issuance costs			0
Borrowings on revolving facilities, net			0	0
Repayment of debt			0	0
Common stock repurchase				0
Proceeds from exercise of options and warrants			0	0
Other financing activities			0	0
Cash flows provided by (used in) financing activities			0	0
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]
Condensed Consolidating Statements of Operations and Comprehensive Income
Revenue	310.8	368.2	948.5	1,099.2
Operating costs and expenses	253.1	302.2	824.8	887.0
Operating (loss) income	57.7	66.0	123.7	212.2
Interest expense (income), net	46.7	55.2	140.0	163.3
Other (income) expense, net	0.3	0.1	6.7	1.6
(Loss) income before equity in earnings of subsidiaries and income taxes	10.7	10.7	(23.0)	47.3
Income tax (benefit) expense	1.4	6.8	3.6	26.3
Equity in earnings of subsidiaries, net of tax	0	0	0	0
Net income (loss)	9.3	3.9	(26.6)	21.0
Other comprehensive income (loss)	24.8	2.3	36.4	6.4
Total comprehensive income	34.1	6.2	9.8	27.4
Preferred stock dividends	2.6	2.6	7.8	7.8
Net income (loss) applicable to common shareowners	6.7	1.3	(34.4)	13.2
Condensed Consolidating Balance Sheets
Cash and cash equivalents	413.7	7.7	413.7	7.7
Receivables, net	161.4		161.4		199.0
Other current assets	75.2		75.2		80.9
Total current assets	650.3		650.3		303.5
Property, plant and equipment, net	892.5		892.5		1,587.4
Investment in CyrusOne	480.7		480.7
Goodwill and intangibles, net	107.2		107.2		487.4
Investments in and advances to subsidiaries	0		0		0
Other noncurrent assets	421.0		421.0		494.1
Total assets	2,551.7		2,551.7		2,872.4
Current portion of long-term debt	508.9		508.9		13.4
Accounts payable	108.3		108.3		135.6
Other current liabilities	180.3		180.3		206.4
Total current liabilities	797.5		797.5		355.4
Long-term debt, less current portion	2,108.2		2,108.2		2,676.0
Other noncurrent liabilities	333.2		333.2		539.2
Intercompany payables	0		0		0
Total liabilities	3,238.9		3,238.9		3,570.6
Shareowners' (deficit) equity	(687.2)		(687.2)		(698.2)
Total liabilities and shareowners' equity (deficit)	2,551.7		2,551.7		2,872.4
Condensed Consolidating Statements of Cash Flows
Cash flows (used in) provided by operating activities			59.8	155.0
Capital expenditures			(142.0)	(242.9)
Dividends received from CyrusOne			14.2
Proceeds from sale of assets			1.8	0.6
Cash divested from deconsolidation of CyrusOne			(12.2)
Other investing activities			0.4	(10.4)
Cash flows used in investing activities			(137.8)	(252.7)
Issuance of long-term debt			536.0
Funding between Parent and subsidiaries, net			0	0
Debt issuance costs			(6.4)
Borrowings on revolving facilities, net			(52.0)	44.0
Repayment of debt			(6.7)	(11.3)
Common stock repurchase				(0.3)
Proceeds from exercise of options and warrants			6.8	8.1
Other financing activities			(9.6)	(8.8)
Cash flows provided by (used in) financing activities			468.1	31.7
Increase (decrease) in cash and cash equivalents			390.1	(66.0)
Cash and cash equivalents at beginning of period			23.6	73.7
Cash and cash equivalents at end of period	413.7	7.7	413.7	7.7
Notes guaranteed by parent [Member] | Parent Company [Member]
Condensed Consolidating Statements of Operations and Comprehensive Income
Revenue	0	0	0	0
Operating costs and expenses	1.5	12.5	51.2	23.6
Operating (loss) income	(1.5)	(12.5)	(51.2)	(23.6)
Interest expense (income), net	42.9	41.1	125.0	122.5
Other (income) expense, net	(0.4)	(0.5)	(1.1)	(1.2)
(Loss) income before equity in earnings of subsidiaries and income taxes	(44.0)	(53.1)	(175.1)	(144.9)
Income tax (benefit) expense	(18.5)	(16.1)	(59.8)	(45.9)
Equity in earnings of subsidiaries, net of tax	34.8	40.9	88.7	120.0
Net income (loss)	9.3	3.9	(26.6)	21.0
Other comprehensive income (loss)	24.8	2.2	36.5	6.3
Total comprehensive income	34.1	6.1	9.9	27.3
Preferred stock dividends	2.6	2.6	7.8	7.8
Net income (loss) applicable to common shareowners	6.7	1.3	(34.4)	13.2
Condensed Consolidating Balance Sheets
Cash and cash equivalents	411.1	2.3	411.1	2.3
Receivables, net	1.6		1.6		1.0
Other current assets	2.6		2.6		3.1
Total current assets	415.3		415.3		7.9
Property, plant and equipment, net	0.1		0.1		0.1
Investment in CyrusOne	0		0
Goodwill and intangibles, net	0		0		0
Investments in and advances to subsidiaries	1,546.8		1,546.8		1,449.9
Other noncurrent assets	380.6		380.6		384.6
Total assets	2,342.8		2,342.8		1,842.5
Current portion of long-term debt	501.7		501.7		0
Accounts payable	1.0		1.0		1.2
Other current liabilities	93.3		93.3		85.6
Total current liabilities	596.0		596.0		86.8
Long-term debt, less current portion	1,877.2		1,877.2		1,841.7
Other noncurrent liabilities	274.3		274.3		383.3
Intercompany payables	282.5		282.5		228.9
Total liabilities	3,030.0		3,030.0		2,540.7
Shareowners' (deficit) equity	(687.2)		(687.2)		(698.2)
Total liabilities and shareowners' equity (deficit)	2,342.8		2,342.8		1,842.5
Condensed Consolidating Statements of Cash Flows
Cash flows (used in) provided by operating activities			(165.0)	(69.1)
Capital expenditures			0	0
Dividends received from CyrusOne			0
Proceeds from sale of assets			0	0
Cash divested from deconsolidation of CyrusOne			0
Other investing activities			0	0
Cash flows used in investing activities			0	0
Issuance of long-term debt			536.0
Funding between Parent and subsidiaries, net			45.5	2.9
Debt issuance costs			(6.4)
Borrowings on revolving facilities, net			0	0
Repayment of debt			0	0
Common stock repurchase				(0.3)
Proceeds from exercise of options and warrants			6.8	8.1
Other financing activities			(9.6)	(8.9)
Cash flows provided by (used in) financing activities			572.3	1.8
Increase (decrease) in cash and cash equivalents			407.3	(67.3)
Cash and cash equivalents at beginning of period			3.8	69.6
Cash and cash equivalents at end of period	411.1	2.3	411.1	2.3
Notes guaranteed by parent [Member] | Cincinnati Bell Telephone Company [Member]
Condensed Consolidating Statements of Operations and Comprehensive Income
Revenue	161.4	160.8	482.3	482.0
Operating costs and expenses	115.3	112.0	340.0	324.8
Operating (loss) income	46.1	48.8	142.3	157.2
Interest expense (income), net	(0.3)	(0.6)	(1.4)	(0.8)
Other (income) expense, net	1.8	0.6	4.4	2.9
(Loss) income before equity in earnings of subsidiaries and income taxes	44.6	48.8	139.3	155.1
Income tax (benefit) expense	16.4	18.1	51.2	56.6
Equity in earnings of subsidiaries, net of tax	0	0	0	0
Net income (loss)	28.2	30.7	88.1	98.5
Other comprehensive income (loss)	0	0	0	0
Total comprehensive income	28.2	30.7	88.1	98.5
Preferred stock dividends	0	0	0	0
Net income (loss) applicable to common shareowners	28.2	30.7	88.1	98.5
Condensed Consolidating Balance Sheets
Cash and cash equivalents	2.0	1.3	2.0	1.3
Receivables, net	0		0		0
Other current assets	29.3		29.3		34.4
Total current assets	31.3		31.3		36.3
Property, plant and equipment, net	694.2		694.2		646.7
Investment in CyrusOne	0		0
Goodwill and intangibles, net	2.3		2.3		2.3
Investments in and advances to subsidiaries	288.8		288.8		228.2
Other noncurrent assets	6.2		6.2		6.3
Total assets	1,022.8		1,022.8		919.8
Current portion of long-term debt	3.9		3.9		3.0
Accounts payable	58.7		58.7		61.7
Other current liabilities	50.8		50.8		50.2
Total current liabilities	113.4		113.4		114.9
Long-term debt, less current portion	142.3		142.3		141.3
Other noncurrent liabilities	153.9		153.9		138.6
Intercompany payables	0		0		0
Total liabilities	409.6		409.6		394.8
Shareowners' (deficit) equity	613.2		613.2		525.0
Total liabilities and shareowners' equity (deficit)	1,022.8		1,022.8		919.8
Condensed Consolidating Statements of Cash Flows
Cash flows (used in) provided by operating activities			170.1	169.7
Capital expenditures			(108.7)	(73.6)
Dividends received from CyrusOne			0
Proceeds from sale of assets			1.8	0.4
Cash divested from deconsolidation of CyrusOne			0
Other investing activities			0	0
Cash flows used in investing activities			(106.9)	(73.2)
Issuance of long-term debt			0
Funding between Parent and subsidiaries, net			(60.5)	(94.3)
Debt issuance costs			0
Borrowings on revolving facilities, net			0	0
Repayment of debt			(2.6)	(2.3)
Common stock repurchase				0
Proceeds from exercise of options and warrants			0	0
Other financing activities			0	0
Cash flows provided by (used in) financing activities			(63.1)	(96.6)
Increase (decrease) in cash and cash equivalents			0.1	(0.1)
Cash and cash equivalents at beginning of period			1.9	1.4
Cash and cash equivalents at end of period	2.0	1.3	2.0	1.3
Notes guaranteed by parent [Member] | Non-Guarantor Subsidiaries [Member]
Condensed Consolidating Statements of Operations and Comprehensive Income
Revenue	163.5	222.8	508.4	663.6
Operating costs and expenses	150.4	193.1	475.8	585.0
Operating (loss) income	13.1	29.7	32.6	78.6
Interest expense (income), net	4.1	14.7	16.4	41.6
Other (income) expense, net	(1.1)	0	3.4	(0.1)
(Loss) income before equity in earnings of subsidiaries and income taxes	10.1	15.0	12.8	37.1
Income tax (benefit) expense	3.5	4.8	12.2	15.6
Equity in earnings of subsidiaries, net of tax	0	0	0	0
Net income (loss)	6.6	10.2	0.6	21.5
Other comprehensive income (loss)	0	0.1	(0.1)	0.1
Total comprehensive income	6.6	10.3	0.5	21.6
Preferred stock dividends	0	0	0	0
Net income (loss) applicable to common shareowners	6.6	10.2	0.6	21.5
Condensed Consolidating Balance Sheets
Cash and cash equivalents	0.6	4.1	0.6	4.1
Receivables, net	159.8		159.8		198.0
Other current assets	43.7		43.7		43.8
Total current assets	204.1		204.1		259.7
Property, plant and equipment, net	198.2		198.2		940.6
Investment in CyrusOne	480.7		480.7
Goodwill and intangibles, net	104.9		104.9		485.1
Investments in and advances to subsidiaries	0		0		0
Other noncurrent assets	189.5		189.5		266.3
Total assets	1,177.4		1,177.4		1,951.7
Current portion of long-term debt	3.3		3.3		10.4
Accounts payable	48.6		48.6		72.7
Other current liabilities	36.8		36.8		69.7
Total current liabilities	88.7		88.7		152.8
Long-term debt, less current portion	88.7		88.7		693.0
Other noncurrent liabilities	60.1		60.1		181.7
Intercompany payables	292.7		292.7		276.4
Total liabilities	530.2		530.2		1,303.9
Shareowners' (deficit) equity	647.2		647.2		647.8
Total liabilities and shareowners' equity (deficit)	1,177.4		1,177.4		1,951.7
Condensed Consolidating Statements of Cash Flows
Cash flows (used in) provided by operating activities			54.7	54.4
Capital expenditures			(33.3)	(169.3)
Dividends received from CyrusOne			14.2
Proceeds from sale of assets			0	0.2
Cash divested from deconsolidation of CyrusOne			(12.2)
Other investing activities			0.4	(10.4)
Cash flows used in investing activities			(30.9)	(179.5)
Issuance of long-term debt			0
Funding between Parent and subsidiaries, net			15.0	91.4
Debt issuance costs			0
Borrowings on revolving facilities, net			(52.0)	44.0
Repayment of debt			(4.1)	(9.0)
Common stock repurchase				0
Proceeds from exercise of options and warrants			0	0
Other financing activities			0	0.1
Cash flows provided by (used in) financing activities			(41.1)	126.5
Increase (decrease) in cash and cash equivalents			(17.3)	1.4
Cash and cash equivalents at beginning of period			17.9	2.7
Cash and cash equivalents at end of period	0.6	4.1	0.6	4.1
Notes guaranteed by parent [Member] | Consolidation, Eliminations [Member]
Condensed Consolidating Statements of Operations and Comprehensive Income
Revenue	(14.1)	(15.4)	(42.2)	(46.4)
Operating costs and expenses	(14.1)	(15.4)	(42.2)	(46.4)
Operating (loss) income	0	0	0	0
Interest expense (income), net	0	0	0	0
Other (income) expense, net	0	0	0	0
(Loss) income before equity in earnings of subsidiaries and income taxes	0	0	0	0
Income tax (benefit) expense	0	0	0	0
Equity in earnings of subsidiaries, net of tax	(34.8)	(40.9)	(88.7)	(120.0)
Net income (loss)	(34.8)	(40.9)	(88.7)	(120.0)
Other comprehensive income (loss)	0	0	0	0
Total comprehensive income	(34.8)	(40.9)	(88.7)	(120.0)
Preferred stock dividends	0	0	0	0
Net income (loss) applicable to common shareowners	(34.8)	(40.9)	(88.7)	(120.0)
Condensed Consolidating Balance Sheets
Cash and cash equivalents	0	0	0	0
Receivables, net	0		0		0
Other current assets	(0.4)		(0.4)		(0.4)
Total current assets	(0.4)		(0.4)		(0.4)
Property, plant and equipment, net	0		0		0
Investment in CyrusOne	0		0
Goodwill and intangibles, net	0		0		0
Investments in and advances to subsidiaries	(1,835.6)		(1,835.6)		(1,678.1)
Other noncurrent assets	(155.3)		(155.3)		(163.1)
Total assets	(1,991.3)		(1,991.3)		(1,841.6)
Current portion of long-term debt	0		0		0
Accounts payable	0		0		0
Other current liabilities	(0.6)		(0.6)		0.9
Total current liabilities	(0.6)		(0.6)		0.9
Long-term debt, less current portion	0		0		0
Other noncurrent liabilities	(155.1)		(155.1)		(164.4)
Intercompany payables	(575.2)		(575.2)		(505.3)
Total liabilities	(730.9)		(730.9)		(668.8)
Shareowners' (deficit) equity	(1,260.4)		(1,260.4)		(1,172.8)
Total liabilities and shareowners' equity (deficit)	(1,991.3)		(1,991.3)		(1,841.6)
Condensed Consolidating Statements of Cash Flows
Cash flows (used in) provided by operating activities			0	0
Capital expenditures			0	0
Dividends received from CyrusOne			0
Proceeds from sale of assets			0	0
Cash divested from deconsolidation of CyrusOne			0
Other investing activities			0	0
Cash flows used in investing activities			0	0
Issuance of long-term debt			0
Funding between Parent and subsidiaries, net			0	0
Debt issuance costs			0
Borrowings on revolving facilities, net			0	0
Repayment of debt			0	0
Common stock repurchase				0
Proceeds from exercise of options and warrants			0	0
Other financing activities			0	0
Cash flows provided by (used in) financing activities			0	0
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
Various Cincinnati Bell Telephone notes [Member]
Debt Instruments [Abstract]
Cincinnati Bell Telephone Notes Outstanding	$ 134.5		$ 134.5		$ 134.5