Income Taxes (Details 3) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Tax credits available to offset future tax liabilities
U.S. tax credits	$ 18.8
Undistributed earnings of foreign subsidiaries on which U.S. income taxes are not provided	1,054.0
Portion of unrecognized tax benefits, excluding interest, which if recognized, would result in a reduction of the effective tax rate	14.1
Reasonably possible reduction in unrecognized tax benefits due to statutes of limitations expiring and favorably settling with taxing authorities, low end of range	1
Reasonably possible reduction in unrecognized tax benefits due to statutes of limitations expiring and favorably settling with taxing authorities, high end of range	3
Reconciliation of beginning and ending amount of unrecognized tax benefits
Gross unrecognized tax benefits at the beginning of the year	42.1	34.6	27.0
Gross increases - tax positions in prior periods		5.9	5.5
Gross decreases - tax positions in prior periods	(0.5)	(2.2)	(0.6)
Gross increases - current period tax positions	0.7	12.0	3.1
Gross decreases - current period tax positions			(0.4)
Settlements	(7.1)	(4.6)
Lapse of statutes	(2.5)	(3.6)
Gross unrecognized tax benefits at the end of the year	32.7	42.1	34.6
Accrued interest and penalties related to uncertain tax positions	3.8	3.7
Penalties and interest expense relating to unrecognized tax benefits	0.9	2.0
Research and Development
Tax credits available to offset future tax liabilities
U.S. tax credits	11.6
Foreign tax credits
Tax credits available to offset future tax liabilities
U.S. tax credits	$ 7.2