Employee Benefit Plans, Shares Available For Grant (Details)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Shares Available For Grant
Options Canceled, Number of Shares	600,000	1,300,000	2,800,000
Options Expired, Number of Shares	7,200,000	4,100,000	2,100,000
Shares counted against common shares authorized	2.1
Restricted Stock Units and Performance Share Awards [Member]
Shares Available For Grant
Fair Market Value on Date of Grant For RSUS And PSAS Issued at Discount, Maximum Percentage	100.00%
Equity Incentive Plan 2006 [Member]
Shares Available For Grant
Beginning Balance, Number of Shares	49,100,000
Awards Granted, Number of Shares	(24,100,000)
Awards Canceled, Number of Shares	15,000,000
Options Canceled, Number of Shares	600,000
Options Expired, Number of Shares	7,200,000
Ending Balance, Number of Shares	47,800,000