Share-Based Compensation (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based compensation disclosures
Share Based Compensation expense	$ 53,300,000	$ 18,300,000	$ 21,200,000
Options
Exercised (in shares)	(5,383,000)	3,625,000	(11,605,000)
Restricted Stock Award
Share-based compensation disclosures
Share Based Compensation expense	51,100,000	14,100,000	13,400,000
Number of types of performance share awards	2
Option to purchase common stock available for grant	6,800,000
Restricted Stock Award | Maximum
Share-based compensation disclosures
Vesting period of shares	5 years
Stock options
Share-based compensation disclosures
Option to purchase common stock available for grant	7,800,000	14,300,000
Exercise period	10 years
Options
Options outstanding at the beginning of the period (in shares)	22,464,000
Granted (in shares)	63,000
Exercised (in shares)	(577,000)
Forfeited (in shares)	(3,564,000)
Options outstanding at the end of the period (in shares)	18,386,000	22,464,000
Options exercisable at the end of the period (in shares)	17,837,000	20,800,000	24,900,000
Weighted Average Exercise Price
Options outstanding at the beginning of the period (in dollars per share)	$ 20.53
Granted (in dollars per share)	$ 16.06
Exercised (in dollars per share)	$ 9.34
Surrendered (in dollars per share)	$ 9.18
Forfeited (in dollars per share)	$ 19.36
Options outstanding at the end of the period (in dollars per share)	$ 21.10	$ 20.53
Options exercisable at the end of the period (in dollars per share)	$ 21.10	$ 20.99	$ 19.83
Weighted Average Remaining Contractual Term
Options outstanding at the end of the period	3 years 2 months 19 days
Options exercisable at the end of the period	3 years 22 days
Aggregate Intrinsic Value
Options outstanding at the end of the period (in dollars)	51,136,000
Options exercisable at the end of the period (in dollars)	$ 50,818,000
Fair value of stock options
Weighted-average fair value of options granted (in dollars per share)	$ 6.05	$ 9.40	$ 6.24
Weighted-average risk free interest rate (as a percent)	0.79%	0.63%	0.65%
Dividend yield (as a percent)	0.84%	0.00%	0.00%
Volatility (as a percent)	51.01%	55.74%	51.09%
Expected life	4 years	4 years	4 years
Stock options | Employees, Executives and Directors
Options
Granted (in shares)	63,638	658,061	930,753
Stock options | Minimum
Share-based compensation disclosures
Vesting period of shares	3 years
Stock options | Maximum
Share-based compensation disclosures
Vesting period of shares	5 years