Fair Value Measurements (Details) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Assets:
Deferred compensation assets	$ 6.9	$ 6.6
Foreign currency contracts	1.9	0.2
Total assets at fair value	8.8	6.8
Liabilities:
Contingent consideration	5.2	5.0
Deferred compensation liabilities	9.1	8.7
Interest rate swap contracts	2.7	3.6
Foreign currency contracts	0.1
Total liabilities at fair value	17.1	17.3
Level 1 [Member]
Assets:
Deferred compensation assets	6.9	6.6
Total assets at fair value	6.9	6.6
Liabilities:
Deferred compensation liabilities	9.1	8.7
Total liabilities at fair value	9.1	8.7
Level 2 [Member]
Assets:
Foreign currency contracts	1.9	0.2
Total assets at fair value	1.9	0.2
Liabilities:
Interest rate swap contracts	2.7	3.6
Foreign currency contracts	0.1
Total liabilities at fair value	2.8	3.6
Level 3 [Member]
Liabilities:
Contingent consideration	5.2	5.0
Total liabilities at fair value	$ 5.2	$ 5.0