Carrying amount as of the balance sheet date of known and estimated obligations associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, which are expected to be paid in the next twelve months or in the normal operating cycle if longer. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

Carrying amount as of the balance sheet date of known and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, which are expected to be paid after one year or beyond the next operating cycle, if longer. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

+ References+ Details

Restructuring Charges (Details) (USD $) In Millions	3 Months Ended
Restructuring Charges (Details) (USD $) In Millions	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010
Restructuring Reserve [Roll Forward]
Beginning balance	$ 13.7	$ 15.3	$ 20.3
Utilizations	(0.6)	(1.6)	(5.0)
Ending balance	13.1	13.7	15.3
Restructuring liabilities included in other current liabilities	6.2			9.3
Restructuring liabilities included in other noncurrent liabilities	6.9			11.0
Wireline [Member] \| Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Beginning balance				9.4
Ending balance	5.9			9.4
Wireline [Member] \| Lease Abandonment [Member]
Restructuring Reserve [Roll Forward]
Ending balance	2.6
Wireless [Member] \| Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Beginning balance				0.8
Ending balance	0.7			0.8
IT Services and Hardware [Member] \| Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Beginning balance				1.3
Ending balance	0.6			1.3
Data Center Colocation [Member] \| Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Beginning balance				0
Ending balance	0			0
Data Center Colocation [Member] \| Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Beginning balance				1.4
Ending balance				1.4
Corporate and eliminations [Member]
Restructuring Reserve [Roll Forward]
Ending balance	3.2
Corporate and eliminations [Member] \| Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Beginning balance				0.2
Ending balance	0			0.2
Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Beginning balance	7.4	8.5	11.7
Utilizations	(0.2)	(1.1)	(3.2)
Ending balance	7.2	7.4	8.5
Lease Abandonment [Member]
Restructuring Reserve [Roll Forward]
Beginning balance	6.3	6.8	7.2
Utilizations	(0.4)	(0.5)	(0.4)
Ending balance	5.9	6.3	6.8
Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Beginning balance	0	0	1.4
Utilizations	0	0	(1.4)
Ending balance	$ 0	$ 0	$ 0