Financial Information for Subsidiary and Guarantor Parent (Changes) (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015	Dec. 31, 2014
Condensed Financial Statements, Captions [Line Items]
Current assets	$ 1,800.7		$ 1,867.6
Assets	5,719.1		5,751.7
Current liabilities	828.7		686.5
Liabilities	3,614.6		3,555.2
Stockholders' equity	2,098.4	$ 2,708.0	2,184.4	$ 2,709.3
Cash flows provided by (used in) operating activities	(61.5)	12.0
Net Cash Provided by (Used in) Investing Activities	(68.7)	(22.5)
Cash provided by (used in) financing activities	137.3	(21.0)
NonGuarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Current assets	4,372.6		4,112.5
Assets	6,848.1		6,598.1
Current liabilities	516.0		393.7
Liabilities	709.1		596.3
Stockholders' equity	6,132.9		5,989.7
Cash flows provided by (used in) operating activities	85.0	80.6
Net Cash Provided by (Used in) Investing Activities	(225.6)	(110.4)
Cash provided by (used in) financing activities	146.1	(0.2)
Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Current assets	284.1		346.8
Assets	1,942.8		1,967.4
Current liabilities	1,660.9		1,521.3
Liabilities	2,291.1		2,176.9
Stockholders' equity	(348.3)		(209.5)
Cash flows provided by (used in) operating activities	(117.3)	(42.3)
Net Cash Provided by (Used in) Investing Activities	(41.0)	(9.0)
Cash provided by (used in) financing activities	158.0	49.5
Parent Company
Condensed Financial Statements, Captions [Line Items]
Current assets	7.2		9.8
Assets	5,776.0		5,767.9
Current liabilities	1,515.0		1,373.0
Liabilities	3,677.6		3,583.5
Stockholders' equity	2,098.4		2,184.4
Cash flows provided by (used in) operating activities	(29.2)	(26.3)
Net Cash Provided by (Used in) Investing Activities	(0.2)	0.0
Cash provided by (used in) financing activities	31.3	26.6
Consolidation Eliminations
Condensed Financial Statements, Captions [Line Items]
Current assets	(2,863.2)		(2,601.5)
Assets	(8,847.8)		(8,581.7)
Current liabilities	(2,863.2)		(2,601.5)
Liabilities	(3,063.2)		(2,801.5)
Stockholders' equity	(5,784.6)		$ (5,780.2)
Cash flows provided by (used in) operating activities	0.0	0.0
Net Cash Provided by (Used in) Investing Activities	198.1	96.9
Cash provided by (used in) financing activities	$ (198.1)	$ (96.9)

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.18)
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