Earnings per Share (EPS) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Earnings per Share (EPS) (Textuals) [Abstract]
Antidilutive shares excluded from EPS calculation	0.4	0.3		0.4	0.3
EPS numerator:
Loss from continuing operations, net of income taxes	$ (95.6)	$ (144.4)	$ (253.9)	$ (488.1)	$ (1,316.0)
Less: Net income attributable to noncontrolling interests	1.8	2.8	$ 3.5	3.5	7.9
Loss from continuing operations attributable to common stockholders, after allocation of earnings to participating securities	(97.4)	(147.2)		(491.6)	(1,323.9)
Loss from discontinued operations attributable to common stockholders, after allocation of earnings to participating securities	(38.1)	(157.5)		(44.5)	(202.7)
Net loss attributable to common stockholders, after earnings allocated to participating securities	$ (135.5)	$ (304.7)		$ (536.1)	$ (1,526.6)
EPS denominator:
Weighted Average Number of Shares Outstanding, Basic	18.3	18.2		18.3	18.1
Weighted Average Number of Shares Outstanding, Diluted	18.3	18.2		18.3	18.1
Basic EPS attributable to common stockholders:
Loss from continuing operations	$ (5.32)	$ (8.08)		$ (26.88)	$ (73.05)
Loss from discontinued operations	(2.09)	(8.65)		(2.43)	(11.18)
Net loss attributable to common stockholders	(7.41)	(16.73)		(29.31)	(84.23)
Diluted EPS attributable to common stockholders:
Loss from continuing operations	(5.32)	(8.08)		(26.88)	(73.05)
Loss from discontinued operations	(2.09)	(8.65)		(2.43)	(11.18)
Net loss attributable to common stockholders	(7.41)	(16.73)		(29.31)	(84.23)
Common Stock [Member]
Earnings Per Share [Line Items]
Common Stock, par value per share	$ 0.01	$ 0.01	$ 0.01	$ 0.01	$ 0.01	$ 0.01