Share-based compensation plans (Tables)

12 Months Ended

Dec. 31, 2011

Share-based compensation plans [Abstract]

Summary of option activity in the stock incentive plans

A summary of option activity in the stock incentive plans during 2011 is as follows:

	Weighted
	Average		Shares
	Exercise		Subject
	Price		to Option
Outstanding, December 31, 2010	$	60.08		1,749,700
Granted		-		-
Exercised		-		-
Forfeited or expired		58.28		(329,200	)
Outstanding, December 31, 2011	$	60.50		1,420,500

Summary of stock options outstanding and exercisable

The following is a summary of stock options outstanding, all of which are exercisable, at December 31, 2011:

	Options Outstanding and Exercisable
					Weighted
Exercise			Remaining		Average
Price			Average		Exercise
Range	Shares		Life (years)		Price
$43.70 - 43.70		349,500		1.1	$	43.70
$63.80 - 68.20		1,071,000		1.1	$	65.98
Total		1,420,500		1.1	$	60.50

Summary of restricted stock or restricted stock unit activity

A summary of restricted stock or restricted stock unit activity during 2011 is as follows:

	Weighted Average Grant Date Fair Market Value		Shares
Restricted stock outstanding at December 31, 2010	$	14.69		3,457,266
Granted		8.94		1,368,295
Vested		8.32		(1,698,956	)
Forfeited		60.01		(180,843	)
Restricted stock outstanding at December 31, 2011	$	12.88		2,945,762