Business Segment Information (Schedule Of Business Segment Information) (Details) (USD $) In Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010	Dec. 31, 2011	Dec. 31, 2010
Revenues	$ 576.9	$ 556.0	$ 1,673.1	$ 1,630.2
Depreciation	21.6	24.1	63.9	75.4
Amortization	2.4	2.4	7.2	7.6	9.6
Restructuring charges	0	0	0	17.6
Operating Income (Loss)	43.5	34.7	118.6	64.6
Capital Expenditures	19.7	21.3	57.0	48.5
Cost allocated for discontinued business segment included in continuing operations		0		9.1
CEO transition costs		1.4		7.6
Curtailment benefit reocnigzed during the period			1.5
Goodwill, net	818.0		818.0			820.5
Customer Management [Member]
Revenues	490.9	462.9	1,419.0	1,372.6
Depreciation	14.9	16.6	44.5	50.8
Amortization	1.9	1.9	5.6	5.7
Restructuring charges	1.0	0	1.0	15.3
Operating Income (Loss)	39.0	31.3	108.5	73.1
Capital Expenditures	10.6	15.0	35.2	32.2
Goodwill, net	621.2		621.2			624.1
Information Management [Member]
Revenues	83.6	81.9	240.4	242.3
Depreciation	3.6	3.5	9.9	11.1
Amortization	0.6	0.6	1.7	2.0
Restructuring charges	(1.2)	0	(1.2)	0
Operating Income (Loss)	9.7	11.3	23.4	27.6
Capital Expenditures	2.6	2.6	9.6	7.2
Goodwill, net	196.8		196.8			196.4
Corporate And Other [Member]
Revenues	2.4	11.2	13.7	15.3
Depreciation	3.1	4.0	9.5	13.5
Restructuring charges	0.2	0	0.2	2.3
Operating Income (Loss)	(5.2)	(7.9)	(13.3)	(36.1)
Capital Expenditures	$ 6.5	$ 3.7	$ 12.2	$ 9.1