Stock-Based Compensation Plans (Stock Option Activity) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Shares
Closing Balance (in shares)	11,120,069
Options outstanding - end of the year (in shares)	8,853,859
Per share weighted average exercise prices
Closing Balance (in dollars per shares)	$ 10.64
Options exercisable - end of the year (in dollars per share)	$ 11.94
Stock Options
Shares
Closing Balance (in shares)	12,814,365	12,822,684
Granted (in shares)	737,842	2,801,982
Exercised (in shares)	(777,429)	(33,501)	0
Canceled (in shares)	(604,101)	(1,653,126)
Expired (in shares)	(1,050,608)	(1,123,674)
Closing Balance (in shares)	11,120,069	12,814,365	12,822,684
Options outstanding - end of the year (in shares)	8,853,859	7,027,974
Per share weighted average exercise prices
Opening Balance (in dollars per shares)	$ 11.81	$ 14.08
Granted (in dollars per share)	8.48	3.98
Exercised (in dollars per share)	6.11	6.82
Canceled (in dollars per share)	11.71	10.09
Expired (in dollars per share)	25.85	22.09
Closing Balance (in dollars per shares)	10.65	11.81	$ 14.08
Options exercisable - end of the year (in dollars per share)	$ 11.94	$ 16.76