Earnings Per Share (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Earnings Per Share [Abstract]
Income from continuing operations	$ 58	$ 25	$ 103	$ 27
Loss from discontinued operations, net of tax	(1)	0	(1)	0
Net income	57	25	102	27
Effect of dilutive securities - RSUs, MSUs, performance shares and stock options	0	0	0	0
Effect of dilutive securities - 10% convertible senior notes	0	0	2	0
Effect of dilutive securities - Deferred compensation program for non-employee directors	0	0	0	0
Income available to shareholders	$ 57	$ 25	$ 104	$ 27
Average common shares	144,500,682	108,544,752	139,702,728	108,449,431
Dilutive RSUs, MSUs, performance shares and stock options	2,300,000	2,300,000	2,500,000	2,600,000
Common shares issuable upon conversion of our 10% convertible senior notes	0	0	4,700,000	0
Deferred shares associated with a deferred compensation program for non-employee directors	200,000	200,000	0	200,000
Average diluted common shares	147,024,196	111,047,951	146,920,294	111,245,400
Income from continuing operations, per basic share	$ 0.40	$ 0.23	$ 0.74	$ 0.25
Loss from discontinued operations, per basic share	$ (0.01)	$ 0.00	$ (0.01)	$ 0.00
Income per basic share	$ 0.39	$ 0.23	$ 0.73	$ 0.25
Income from continuing operations, per diluted share	$ 0.39	$ 0.22	$ 0.72	$ 0.24
Income from discontinued operations, per diluted share	$ (0.01)	$ 0.00	$ (0.01)	$ 0.00
Income per diluted share	$ 0.38	$ 0.22	$ 0.71	$ 0.24