Earnings per Share, Anti Dilutive Securities (Details) - $ / shares shares in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2015	Jun. 30, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive securities (in shares)	43,537		48,428		44,170	49,184
Dividends per common share (in dollars per share)	$ 0.07	$ 0.07	$ 0.0625	$ 0.0625	$ 0.14	$ 0.125
Stock options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive securities (in shares)	2,590		5,566		2,384	5,313
Restricted Stock and Performance Shares [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive securities (in shares)	13,981		15,896		14,820	16,905
Convertible preferred stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive securities (in shares)	26,966		26,966		26,966	26,966