Productivity and Cost-Savings Initiatives Expenses (Details 1) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Schedule of Productivity and Cost-Savings Initiatives Expenses in Income Statement [Abstract]
Cost of services	$ 840.5	$ 818.2	$ 2,465.5	$ 2,389.3
Selling, general and administrative	286.3	295.3	867.4	861.8
Total expenses, pre-tax	1,126.8	1,113.5	3,332.9	3,251.1
Productivity and Cost-Savings Initiatives [Member]
Schedule of Productivity and Cost-Savings Initiatives Expenses in Income Statement [Abstract]
Cost of services		4.5		13.9
Selling, general and administrative		1.7		10.0
Total expenses, pre-tax		6.2		23.9
Total expenses, net of tax		$ 4.3		$ 16.6