Employee and Non-Employee Director Stock and Benefit Plans (Details 4) (Restricted share awards, USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Compensation expense
Share-based compensation expense	$ 13,000,000	$ 12,400,000	$ 20,600,000
Tax benefit related to share-based compensation expense	5,200,000	5,000,000	8,400,000
Restructuring charges
Compensation expense
Share-based compensation expense	400,000	500,000
Severance and restructuring charges
Compensation expense
Share-based compensation expense			$ 2,300,000