Segment Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Segment Reporting [Abstract]
Number of operating segments			3
Summary of financial information of segments
Total assets	$ 2,888.9		$ 2,888.9		$ 3,090.5
Operating revenues	510.5	480.2	1,525.3	1,460.5
Out-of-pocket reimbursements	169.0	171.6	517.5	530.8
Total revenues	679.5	651.8	2,042.8	1,991.3
Costs and expenses	563.3	531.4	1,723.1	1,657.3
Depreciation and amortization	33.4	34.1	97.5	100.4
Income from operations	82.8	86.3	222.2	233.6
Other income, net	57.5	73.4	282.3	175.0
Equity in earnings of unconsolidated affiliates	10.2	3.8	25.2	18.9
Earnings (loss) before interest and income taxes	150.5	163.5	529.7	427.5
Interest expense	6.4	8.4	20.0	27.3
Intersegment Eliminations [Member]
Summary of financial information of segments
Total assets	(60.9)		(60.9)		(63.4)
Operating revenues	(25.9)	(24.4)	(76.0)	(70.3)
Out-of-pocket reimbursements	(2.8)	(1.9)	(7.9)	(5.6)
Total revenues	(28.7)	(26.3)	(83.9)	(75.9)
Costs and expenses	(25.9)	(23.4)	(75.8)	(67.8)
Depreciation and amortization	(0.6)	(0.7)	(1.9)	(2.0)
Income from operations	(2.2)	(2.2)	(6.2)	(6.1)
Other income, net	0	0	0	0
Equity in earnings of unconsolidated affiliates	0	0	0	0
Earnings (loss) before interest and income taxes	(2.2)	(2.2)	(6.2)	(6.1)
Intersegment Eliminations [Member] | Financial Services
Summary of financial information of segments
Operating revenues	12.5	11.7	36.6	32.8
Intersegment Eliminations [Member] | Healthcare Services
Summary of financial information of segments
Operating revenues	0	0	0	0
Intersegment Eliminations [Member] | Customer Communications
Summary of financial information of segments
Operating revenues	2.4	1.7	6.8	5.7
Intersegment Eliminations [Member] | Investments and Other
Summary of financial information of segments
Operating revenues	11.0	11.0	32.6	31.8
Operating Segments [Member]
Summary of financial information of segments
Operating revenues	510.5	480.2	1,525.3	1,460.5
Operating Segments [Member] | Financial Services
Summary of financial information of segments
Total assets	1,315.0		1,315.0		1,422.5
Operating revenues	254.4	237.1	753.3	713.5
Out-of-pocket reimbursements	11.3	8.8	37.6	31.9
Total revenues	278.2	257.6	827.5	778.2
Costs and expenses	210.7	187.0	638.2	577.2
Depreciation and amortization	17.6	16.2	50.9	47.5
Income from operations	49.9	54.4	138.4	153.5
Other income, net	0.3	2.6	20.4	0
Equity in earnings of unconsolidated affiliates	8.7	2.5	20.4	14.1
Earnings (loss) before interest and income taxes	58.9	59.5	179.2	167.6
Operating Segments [Member] | Healthcare Services
Summary of financial information of segments
Total assets	343.6		343.6		336.6
Operating revenues	95.5	80.7	280.4	242.7
Out-of-pocket reimbursements	1.9	1.5	4.9	4.2
Total revenues	97.4	82.2	285.3	246.9
Costs and expenses	73.1	66.0	232.9	202.8
Depreciation and amortization	4.7	4.8	14.4	14.2
Income from operations	19.6	11.4	38.0	29.9
Other income, net	0.1	0.1	0.1	0.2
Equity in earnings of unconsolidated affiliates	0.1	0.1	0.4	0.3
Earnings (loss) before interest and income taxes	19.8	11.6	38.5	30.4
Operating Segments [Member] | Customer Communications
Summary of financial information of segments
Total assets	411.1		411.1		403.0
Operating revenues	156.7	158.8	480.4	492.8
Out-of-pocket reimbursements	158.6	163.1	482.8	500.2
Total revenues	317.7	323.6	970.0	998.7
Costs and expenses	296.2	297.2	900.8	923.0
Depreciation and amortization	9.5	10.9	27.9	32.7
Income from operations	12.0	15.5	41.3	43.0
Other income, net	0.1	0.5	0.3	0.2
Equity in earnings of unconsolidated affiliates	0.2	0.2	0.8	0.3
Earnings (loss) before interest and income taxes	12.3	16.2	42.4	43.5
Operating Segments [Member] | Investments and Other
Summary of financial information of segments
Total assets	880.1		880.1		991.8
Operating revenues	3.9	3.6	11.2	11.5
Out-of-pocket reimbursements	0	0.1	0.1	0.1
Total revenues	14.9	14.7	43.9	43.4
Costs and expenses	9.2	4.6	27.0	22.1
Depreciation and amortization	2.2	2.9	6.2	8.0
Income from operations	3.5	7.2	10.7	13.3
Other income, net	57.0	70.2	261.5	174.6
Equity in earnings of unconsolidated affiliates	1.2	1.0	3.6	4.2
Earnings (loss) before interest and income taxes	$ 61.7	$ 78.4	$ 275.8	$ 192.1