Fair Value Measurements (Details) - Recurring - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Level 1
Assets:
Investments held in rabbi trusts	$ 2.0	$ 3.4
Level 2
Assets:
Foreign currency forward contracts	90.4	75.5
Interest rate swap contracts	7.4
Liabilities:
Foreign currency forward contracts	36.9	27.9
Interest rate swap contracts	5.7	24.2
Level 3
Assets:
Contingent consideration	0.3	0.3
Liabilities:
Contingent consideration	0.8	1.6
Carrying Amount
Assets:
Investments held in rabbi trusts	2.0	3.4
Foreign currency forward contracts	90.4	75.5
Interest rate swap contracts	7.4
Contingent consideration	0.3	0.3
Liabilities:
Foreign currency forward contracts	36.9	27.9
Interest rate swap contracts	5.7	24.2
Contingent consideration	$ 0.8	$ 1.6