Stock-Based Compensation Plans (Stock Option Activity) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Shares
Closing Balance (in shares)	8,771,600
Options outstanding - end of the year (in shares)	8,054,932
Per share weighted average exercise prices
Opening Balance (in dollars per shares)	$ 31.26
Options exercisable - end of the year (in dollars per share)	$ 32.14
Stock Options
Shares
Closing Balance (in shares)	10,708,694	12,396,894
Granted (in shares)	200,000	0	800,000
Exercised (in shares)	0	(137,072)
Canceled (in shares)	(100,200)	(114,925)
Expired (in shares)	(2,036,894)	(1,436,203)
Closing Balance (in shares)	8,771,600	10,708,694	12,396,894
Options outstanding - end of the year (in shares)	8,054,932	9,808,694
Per share weighted average exercise prices
Opening Balance (in dollars per shares)	$ 34.27	$ 34.90
Granted (in dollars per share)	24.79	0.00	$ 21.93
Exercised (in dollars per share)	0.00	22.78
Canceled (in dollars per share)	31.59	36.05
Expired (in dollars per share)	46.42	40.06
Opening Balance (in dollars per shares)	31.26	34.27	$ 34.90
Options exercisable - end of the year (in dollars per share)	$ 32.14	$ 35.60