Consolidated Statements of Changes in Total Equity - USD ($) $ in Millions	Total		Total GCC Equity [Member]	Preferred Stock [Member]	Common Stock [Member]	Add'l Paid in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interest [Member]
Beginning Balance at Dec. 31, 2012	$ 1,448.2		$ 1,331.7	$ 3.8	$ 0.6	$ 676.7	$ (137.0)	$ 892.2	$ (104.6)	$ 116.5
Beginning Balance, shares at Dec. 31, 2012				76,000	49,693,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	(24.7)		(25.3)					(17.8)	(7.5)	0.6
Common stock dividends paid	(26.7)		(26.7)					(26.7)
Preferred stock dividend	(0.3)		(0.3)					(0.3)
Stock option and RSU expense	12.0		12.0			12.0
Exercise of stock options	0.6		0.6			(0.1)	0.7
Exercise of stock options, shares					51,000
Treasury shares related to nonvested stock vesting	(1.0)		(1.0)				(1.0)
Treasury shares related to nonvested stock vesting, shares					(32,000)
Amortization of nonvested shares	1.0		1.0			1.0
Excess tax benefits (deficiencies) from stock-based compensation	(0.7)		(0.7)			(0.7)
Purchase of noncontrolling interest	(4.0)		8.2			8.2				(12.2)
Dividends paid to noncontrolling interest	(5.3)									$ (5.3)
Repurchase of common shares	(19.5)		(19.5)				(19.5)
Repurchase of common shares, shares					(597,000)
Conversion of Preferred Stock				$ (3.8)		3.8
Conversion of Preferred Stock, shares				(76,000)	384,000
Other	0.2		0.2			(1.3)	1.5
Other, shares					99,000
Ending Balance at Dec. 31, 2013	1,379.8		1,280.2	$ 0.0	$ 0.6	699.6	(155.3)	847.4	(112.1)	$ 99.6
Ending Balance, shares at Dec. 31, 2013				0	49,598,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	(773.6)		(778.9)					(627.6)	(151.3)	5.3
Common stock dividends paid	(35.4)		(35.4)					(35.4)
Sale of subsidiaries - noncontrolling interest	(31.5)									(31.5)
Stock option and RSU expense	14.5		14.5			14.5
Exercise of stock options	0.3		0.3			(0.1)	0.4
Exercise of stock options, shares					20,000
Treasury shares related to nonvested stock vesting	(1.8)		(1.8)				(1.8)
Treasury shares related to nonvested stock vesting, shares					(63,000)
Amortization of nonvested shares	0.2		0.2			0.2
Excess tax benefits (deficiencies) from stock-based compensation	(0.5)	[1]	(0.5)			(0.5)
Purchase of noncontrolling interest	(0.7)		(1.9)			(1.9)				1.2
Dividends paid to noncontrolling interest	(6.2)									(6.2)
Repurchase of common shares	(30.7)		(30.7)				(30.7)
Repurchase of common shares, shares					(1,000,000)
Other	(1.2)		6.1			3.0	3.1			(7.3)
Other, shares					128,000
Ending Balance at Dec. 31, 2014	513.2		452.1	$ 0.0	$ 0.6	714.8	(184.3)	184.4	(263.4)	61.1
Ending Balance, shares at Dec. 31, 2014				0	48,683,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	(220.9)		(198.7)					(121.9)	(76.8)	(22.2)
Common stock dividends paid	(35.3)		(35.3)					(35.3)
Sale of subsidiaries - noncontrolling interest	(21.5)									(21.5)
Stock option and RSU expense	7.5		7.5			7.5
Exercise of stock options	$ 0.2		0.2			(0.1)	0.3
Exercise of stock options, shares	17,700				18,000
Treasury shares related to nonvested stock vesting	$ (0.7)		(0.7)				(0.7)
Treasury shares related to nonvested stock vesting, shares					(56,000)
Excess tax benefits (deficiencies) from stock-based compensation	(1.7)		(1.7)			(1.7)
Dividends paid to noncontrolling interest	(2.5)									(2.5)
Other	4.6		4.6				4.6
Other, shares					263,000
Ending Balance at Dec. 31, 2015	$ 242.9		$ 228.0	$ 0.0	$ 0.6	$ 720.5	$ (180.1)	$ 27.2	$ (340.2)	$ 14.9
Ending Balance, shares at Dec. 31, 2015				0	48,908,000

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