Commitments and Contingencies (Details 7) - EHS - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Estimated future payments for environmental obligations
2016	$ 1.5
2017	1.6
2018	1.3
2019	0.1
2020	0.1
Thereafter	0.3
Undiscounted total	4.9
Less amounts representing interest at 1.47%	0.1
Accrued environmental liabilities at the end of the year	$ 4.8	$ 3.6
Interest rate (as a percent)	1470000.00%

Total costs accrued as of the balance sheet date for environmental loss contingencies.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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