Significant Business Transactions (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended												0 Months Ended			12 Months Ended			0 Months Ended
	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Financial services	Dec. 31, 2012 Financial services	Dec. 31, 2011 Financial services	Dec. 31, 2013 Healthcare Services	Dec. 31, 2012 Healthcare Services	Dec. 31, 2011 Healthcare Services	Dec. 31, 2013 Customer communications	Dec. 31, 2012 Customer communications	Dec. 31, 2011 Customer communications	Aug. 05, 2011 Finix, Converge, Subserveo, IntelliSource, Newkirk and Lateral	Dec. 31, 2011 Finix, Converge, Subserveo, IntelliSource, Newkirk and Lateral	Aug. 05, 2011 Finix, Converge, Subserveo, IntelliSource, Newkirk and Lateral Proprietary software	Dec. 31, 2011 Finix, Converge, Subserveo, IntelliSource, Newkirk and Lateral Financial services	Dec. 31, 2011 Finix, Converge, Subserveo, IntelliSource, Newkirk and Lateral Healthcare Services	Dec. 31, 2011 Finix, Converge, Subserveo, IntelliSource, Newkirk and Lateral Customer communications	Oct. 31, 2011 ALPS Holdings, Inc.	Oct. 31, 2011 ALPS Holdings, Inc. Proprietary software
Significant Business Transactions
Goodwill expected to be deductible for income tax purposes														$ 51.2					$ 22.0
Recognized identifiable intangible assets															12.9					1.5
Total revenues if acquisition had occurred on January 1, 2010	2,526.9
Consideration
Cash paid													117.2			38.1	5.0	74.1	251.9
Recognized amounts of identifiable assets acquired and liabilities assumed
Cash and cash equivalents													3.2						0.5
Funds held on behalf of clients																			7.8
Accounts receivable													21.4						8.2
Other current assets													9.3						1.6
Properties (includes proprietary software)													29.4						2.7
Intangible assets													32.9						84.0
Goodwill	487.0	423.7	422.1	235.6	232.6	237.6	155.0	156.4	156.4	33.1	33.1	93.0	71.3						179.2
Other assets													0.4						0.3
Total assets													167.9						284.3
Client funds obligations																			7.8
Other current liabilities													20.2						5.5
Deferred income tax liabilities													10.3						18.2
Debt													20.2
Other liabilities																			0.9
Total liabilities													50.7						32.4
Net assets acquired													$ 117.2						$ 251.9