Fair Value Measurements (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Assets:
Deferred compensation assets	$ 6.6	$ 6.6
Foreign currency contracts	4.4	0.2
Total assets at fair value	11.0	6.8
Liabilities:
Contingent consideration	5.1	5.0
Deferred compensation liabilities	9.0	8.7
Interest rate swap contracts	3.2	3.6
Total liabilities at fair value	17.3	17.3
Level 1 [Member]
Assets:
Deferred compensation assets	6.6	6.6
Total assets at fair value	6.6	6.6
Liabilities:
Deferred compensation liabilities	9.0	8.7
Total liabilities at fair value	9.0	8.7
Level 2 [Member]
Assets:
Foreign currency contracts	4.4	0.2
Total assets at fair value	4.4	0.2
Liabilities:
Interest rate swap contracts	3.2	3.6
Total liabilities at fair value	3.2	3.6
Level 3 [Member]
Liabilities:
Contingent consideration	5.1	5.0
Total liabilities at fair value	$ 5.1	$ 5.0