Fair Value Measurements (Details) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Assets:
Deferred compensation assets	$ 6.4	$ 6.8
Foreign currency contracts	1.5	0.2
Total assets at fair value	7.9	7.0
Liabilities:
Contingent consideration	7.9	6.0
Deferred compensation liabilities	6.8	8.8
Interest rate swap contracts	1.7	2.0
Foreign currency contracts	0.1	0.2
Total liabilities at fair value	16.5	17.0
Level 1 [Member]
Assets:
Deferred compensation assets	6.4	6.8
Total assets at fair value	6.4	6.8
Liabilities:
Deferred compensation liabilities	6.8	8.8
Total liabilities at fair value	6.8	8.8
Level 2 [Member]
Assets:
Foreign currency contracts	1.5	0.2
Total assets at fair value	1.5	0.2
Liabilities:
Interest rate swap contracts	1.7	2.0
Foreign currency contracts	0.1	0.2
Total liabilities at fair value	1.8	2.2
Level 3 [Member]
Liabilities:
Contingent consideration	7.9	6.0
Total liabilities at fair value	$ 7.9	$ 6.0