Restructuring and Other Expense - Restructuring Plans (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		0 Months Ended	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Oct. 22, 2012 Global Processing Improvement Restructuring Program 2012 [Member]	Mar. 31, 2013 Global Processing Improvement Restructuring Program 2012 [Member]	Mar. 31, 2013 Severance and Related Global Processing Improvement Restructuring Program 2012 [Member]	Mar. 31, 2013 Lease Termination Costs Global Processing Improvement Restructuring Program 2012 [Member]	Mar. 31, 2013 Other Global Processing Improvement Restructuring Program 2012 [Member]
Restructuring Cost and Reserve [Line Items]
Expected reduction in operating expenses, percent			25.00%
Reduction in global workforce			20.00%
Restructuring Reserve [Roll Forward]
Accrued balance, beginning of period				$ 16.9	$ 15.4	$ 0.5	$ 1.0
Restructuring Charges	1.5	0.6		2.6	1.7	0.1	0.8
Usage and payments				(5.3)	(5.0)	(0.1)	(0.2)
Currency impacts				(0.3)	(0.2)	0	(0.1)
Accrued balance, end of period				$ 13.9	$ 11.9	$ 0.5	$ 1.5