Fair Value Measurements (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Assets:
Deferred compensation assets	$ 6.4	$ 6.6
Foreign currency contracts	1.0	0.2
Total assets at fair value	7.4	6.8
Liabilities:
Contingent consideration	5.7	5.0
Deferred compensation liabilities	8.2	8.7
Interest rate swap contracts	2.5	3.6
Total liabilities at fair value	16.4	17.3
Level 1 [Member]
Assets:
Deferred compensation assets	6.4	6.6
Total assets at fair value	6.4	6.6
Liabilities:
Deferred compensation liabilities	8.2	8.7
Total liabilities at fair value	8.2	8.7
Level 2 [Member]
Assets:
Foreign currency contracts	1.0	0.2
Total assets at fair value	1.0	0.2
Liabilities:
Interest rate swap contracts	2.5	3.6
Total liabilities at fair value	2.5	3.6
Level 3 [Member]
Liabilities:
Contingent consideration	5.7	5.0
Total liabilities at fair value	$ 5.7	$ 5.0