Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Accounts receivable	$ 4.8	$ 4.6
Deferred compensation	69.7	67.9
Pension, postretirement and postemployment benefits	7.7	8.7
Investment in Natronx	7.7	7.7
Other	30.8	24.4
Tax credit carryforwards/other tax attributes	12.8	14.4
International operating loss carryforwards	8.0	6.2
Total gross deferred tax assets	141.5	133.9
Valuation allowances	(20.2)	(16.3)
Total deferred tax assets	121.3	117.6
Goodwill	(212.3)	(193.5)
Trade names and other intangibles	(322.9)	(312.4)
Property, plant and equipment	(97.1)	(95.6)
Total deferred tax liabilities	(632.3)	(601.5)
Net deferred tax liability	(511.0)	(483.9)
Long term net deferred tax asset	1.2	0.9
Long term net deferred tax liability	$ (512.2)	$ (484.8)