SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS - Narrative (Details) - Deferred Tax Asset Valuation Allowance - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015
Federal and state
Valuation and Qualifying Accounts Disclosure [Line Items]
Valuation allowance recorded on portion of deferred tax assets	$ 61.5	$ 305.3
Foreign
Valuation and Qualifying Accounts Disclosure [Line Items]
Valuation allowances released	$ 43.3

The portion of the valuation allowance pertaining to the deferred tax asset representing potential future taxable deductions from net operating loss carryforwards for which it is more likely than not that a tax benefit will not be realized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32559-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 30
-Paragraph 5
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=64814285&loc=d3e30536-109315

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32537-109319

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant