Stock-Based Compensation Plans (Stock Option Activity) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Shares
Closing Balance	10,708,694
Options outstanding - end of the year	9,808,694
Per share weighted average exercise prices
Closing Balance	$ 34.27
Options exercisable - end of the year	$ 35.60
Stock Options
Shares
Opening Balance	12,396,894	13,653,245
Granted	0	800,000	600,000
Exercised	(137,072)	(35,461)
Canceled	(114,925)	(628,731)
Expired	(1,436,203)	(1,392,159)
Closing Balance	10,708,694	12,396,894	13,653,245
Options outstanding - end of the year	9,808,694	10,864,753
Per share weighted average exercise prices
Opening Balance	$ 34.90	$ 35.28
Granted	$ 0.00	$ 21.93	$ 15.71
Exercised	$ 22.78	$ 22.09
Canceled	$ 36.05	$ 32.93
Expired	$ 40.06	$ 32.39
Closing Balance	$ 34.27	$ 34.90	$ 35.28
Options exercisable - end of the year	$ 35.60	$ 36.84