Share-Based Compensation and Employee Ownership Plans Restricted Shares and Restricted Stock Units (Details) (Equity Plans, USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012
Restricted Shares and Restricted Stock Units (RSUs)
Nonvested Restricted Shares and Restricted Stock Units
Balance outstanding, beginning of period, shares	10,252,023		7,517,682
Granted, shares	7,939,924	[1]	8,381,939
Vested, shares	(4,463,990)		(4,855,489)
Cancelled, shares	0		0
Forfeited, shares	(176,413)		(792,109)
Balance outstanding, end of period, shares	13,551,544		10,252,023
Weighted-Average Grant Date Fair Value
Balance outstanding, beginning of period, in dollars per share	$ 4.15		$ 5.57
Granted, in dollars per share	$ 2.63	[1]	$ 2.82
Vested, in dollars per share	$ 3.86		$ 4.16
Cancelled, in dollars per share	$ 0		$ 0
Forfeited, in dollars per share	$ 3.15		$ 3.51
Balance outstanding, end of period, in dollars per share	$ 3.37		$ 4.15
Unrecognized compensation expense	$ 27.7
Weighted-average recognition period for unrecognized compensation expense	1 year 7 months 3 days
Performance Shares [Member]
Nonvested Restricted Shares and Restricted Stock Units
Granted, shares			705,000

[1] (1) On December 30, 2013, the Company awarded 705,000 performance linked restricted stock units to employees of the Company. The awards will vest on June 10, 2019 and will be earned only to the extent that the Company attains specified performance goals relating its volume-weighted average share price and the aggregate net income for the years from 2014 to 2018. The actual number of RSUs ultimately earned could vary from zero, if performance goals are not met, to as much as 100% of award. Each RSU is equal to the one share of the Company’s common stock. The value of the award will fluctuate with changes in Company’s share price and the attainment of the specified performance goals, until the RSUs are settled solely in shares after the end of the performance period.