Consolidated Statements of Income (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Income Statement [Abstract]
Revenues	$ 491.1	$ 474.6	$ 988.6	$ 939.4
Costs and Expenses:
Cost of providing services and products sold	316.5	304.5	634.2	600.1
Selling, general and administrative	114.1	119.6	238.8	239.4
Research and development costs	2.5	3.6	6.4	7.5
Depreciation	20.5	18.7	40.8	37.6
Amortization	1.8	1.8	3.7	3.7
Restructuring Charges	7.6	0	7.6	0
Asset Impairment Charges	88.6	0	88.6	0
Total costs and expenses	551.6	448.2	1,020.1	888.3
Operating Income (Loss)	(60.5)	26.4	(31.5)	51.1
Earnings from Cellular Partnerships, net	0	10.0	0	20.2
Other income (expense), net	0.7	0.2	2.1	7.8
Interest expense	(4.4)	(4.3)	(8.0)	(8.9)
(Loss) Income before Income Taxes	(64.2)	32.3	(37.4)	70.2
Income tax (benefit) expense	(10.5)	8.3	(5.1)	18.3
(Loss) Income from continuing operations	(53.7)	24.0	(32.3)	51.9
Income from Discontinued Operations, net of tax	68.3	7.7	73.0	14.7
Net Income	$ 14.6	$ 31.7	$ 40.7	$ 66.6
Basic Earnings Per Common Share:
Continuing operations	$ (0.47)	$ 0.20	$ (0.28)	$ 0.43
Discontinued operations	$ 0.60	$ 0.06	$ 0.63	$ 0.12
Basic Earnings per Common Share	$ 0.13	$ 0.26	$ 0.35	$ 0.55
Diluted Earnings Per Common Share:
Continuing operations	$ (0.47)	$ 0.19	$ (0.28)	$ 0.42
Discontinued operations	$ 0.60	$ 0.07	$ 0.63	$ 0.11
Diluted Earnings per Common Share	$ 0.13	$ 0.26	$ 0.35	$ 0.53
Weighted Average Common Shares Outstanding
Basic	115.4	120.7	115.7	121.4
Diluted	115.4	124.1	115.7	124.8