Environmental and Legal Contingencies (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]
Environmental-related capital investments	$ 7.1	$ 7.2	$ 1.6
Environmental compliance costs	$ 133.2	$ 112.4	$ 101.1

Amount of environmental remediation costs capitalized. These expenditures may relate to long-lived improvements in operating facilities.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 30
-Section 25
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=39739230&loc=d3e11660-110855

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration